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An encyclopedia is a
reference work A reference work is a document, such as a Academic publishing#Scholarly paper, paper, book or periodical literature, periodical (or their electronic publishing, electronic equivalents), to which one can refer for information. The information ...
or
compendium A compendium ( compendia or compendiums) is a comprehensive collection of information and analysis pertaining to a body of knowledge. A compendium may concisely summarize a larger work. In most cases, the body of knowledge will concern a specific ...
providing summaries of
knowledge Knowledge is an Declarative knowledge, awareness of facts, a Knowledge by acquaintance, familiarity with individuals and situations, or a Procedural knowledge, practical skill. Knowledge of facts, also called propositional knowledge, is oft ...
, either general or special, in a particular field or discipline. Encyclopedias are divided into articles or entries that are arranged alphabetically by article name or by thematic categories, or else are
hyperlink In computing, a hyperlink, or simply a link, is a digital reference providing direct access to Data (computing), data by a user (computing), user's point and click, clicking or touchscreen, tapping. A hyperlink points to a whole document or to ...
ed and searchable. Encyclopedia entries are longer and more detailed than those in most
dictionaries A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged Alphabetical order, alphabetically (or by Semitic root, consonantal root for Semitic languages or radical-and-stroke sorting, radical an ...
. Generally speaking, encyclopedia articles focus on ''
fact A fact is a truth, true data, datum about one or more aspects of a circumstance. Standard reference works are often used to Fact-checking, check facts. Science, Scientific facts are verified by repeatable careful observation or measurement by ...
ual information'' concerning the subject named in the article's title; this is unlike dictionary entries, which focus on
linguistic Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
information about
word A word is a basic element of language that carries semantics, meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of what a word is, there is no consensus among linguist ...
s, such as their
etymology Etymology ( ) is the study of the origin and evolution of words—including their constituent units of sound and meaning—across time. In the 21st century a subfield within linguistics, etymology has become a more rigorously scientific study. ...
, meaning,
pronunciation Pronunciation is the way in which a word or a language is spoken. To This may refer to generally agreed-upon sequences of sounds used in speaking a given word or all language in a specific dialect—"correct" or "standard" pronunciation—or si ...
, use, and
grammatical In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the goal of which is to formu ...
forms.Béjoint, Henri (2000)
''Modern Lexicography''
, pp. 30–31. Oxford University Press.
Encyclopedias have existed for around 2,000 years and have evolved considerably during that time as regards language (written in a major international or a vernacular language), size (few or many volumes), intent (presentation of a global or a limited range of knowledge), cultural perspective (authoritative, ideological, didactic, utilitarian), authorship (qualifications, style), readership (education level, background, interests, capabilities), and the technologies available for their production and distribution (hand-written manuscripts, small or large print runs, Internet). As a valued source of reliable information compiled by experts, printed versions found a prominent place in
libraries A library is a collection of Book, books, and possibly other Document, materials and Media (communication), media, that is accessible for use by its members and members of allied institutions. Libraries provide physical (hard copies) or electron ...
,
schools A school is the educational institution (and, in the case of in-person learning, the building) designed to provide learning environments for the teaching of students, usually under the direction of teachers. Most countries have systems of ...
and other educational institutions. In the 21st century, the appearance of digital and open-source versions such as
Wikipedia Wikipedia is a free content, free Online content, online encyclopedia that is written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and La ...
(together with the
wiki A wiki ( ) is a form of hypertext publication on the internet which is collaboratively edited and managed by its audience directly through a web browser. A typical wiki contains multiple pages that can either be edited by the public or l ...
website format) has vastly expanded the accessibility, authorship, readership, and variety of encyclopedia entries.


Etymology

The word ''
encyclopedia An encyclopedia is a reference work or compendium providing summaries of knowledge, either general or special, in a particular field or discipline. Encyclopedias are divided into article (publishing), articles or entries that are arranged Alp ...
'' comes from the
Koine Greek Koine Greek (, ), also variously known as Hellenistic Greek, common Attic, the Alexandrian dialect, Biblical Greek, Septuagint Greek or New Testament Greek, was the koiné language, common supra-regional form of Greek language, Greek spoken and ...
,
transliterated Transliteration is a type of conversion of a text from one writing system, script to another that involves swapping Letter (alphabet), letters (thus ''wikt:trans-#Prefix, trans-'' + ''wikt:littera#Latin, liter-'') in predictable ways, such as ...
, from () and () ; together, the phrase literally translates as . However, the two separate words were reduced to a single word due to a scribal error by copyists of a
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
manuscript edition of
Quintillian Marcus Fabius Quintilianus (; 35 – 100 AD) was a Roman educator and rhetorician born in Hispania, widely referred to in medieval schools of rhetoric and in Renaissance writing. In English translation, he is usually referred to as Quinti ...
in 1470. The copyists took this phrase to be a single Greek word, , with the same meaning, and this spurious Greek word became the
Neo-Latin Neo-LatinSidwell, Keith ''Classical Latin-Medieval Latin-Neo Latin'' in ; others, throughout. (also known as New Latin and Modern Latin) is the style of written Latin used in original literary, scholarly, and scientific works, first in Italy d ...
word , which was in turn borrowed into English. Because of this compounded word, readers since the fifteenth century have often, and incorrectly, thought that the Roman authors Quintillian and Pliny described an ancient genre. Following
Noah Webster Noah Webster (October 16, 1758 – May 28, 1843) was an American lexicographer, textbook pioneer, English-language spelling reformer, political writer, editor, and author. He has been called the "Father of American Scholarship and Education" ...
's
spelling reform A spelling reform is a deliberate, often authoritatively sanctioned or mandated change to spelling rules. Proposals for such reform are fairly common, and over the years, many languages have undergone such reforms. Recent high-profile examples a ...
, the
spelling Spelling is a set of conventions for written language regarding how graphemes should correspond to the sounds of spoken language. Spelling is one of the elements of orthography, and highly standardized spelling is a prescriptive element. Spelli ...
of the word varies between ''encyclopedia'' in American English, ''encyclopaedia'' in British English (although the spelling ''encyclopedia'' is increasingly gaining acceptance), and ''encyclopædia'' in certain specialized cases.


Characteristics

The modern encyclopedia evolved from the
dictionary A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged Alphabetical order, alphabetically (or by Semitic root, consonantal root for Semitic languages or radical-and-stroke sorting, radical an ...
in the 18th century; this lineage can be seen in the alphabetical order of print encyclopedias. Historically, both encyclopedias and dictionaries have been compiled by well-educated, well-informed content
expert An expert is somebody who has a broad and deep understanding and competence in terms of knowledge, skill and experience through practice and education in a particular field or area of study. Informally, an expert is someone widely recognized ...
s, but they are significantly different in structure. A dictionary is a linguistic work that primarily focuses on an alphabetical listing of
words A word is a basic element of language that carries meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of what a word is, there is no consensus among linguists on its ...
and their
definitions A definition is a statement of the meaning of a term (a word, phrase, or other set of symbols). Definitions can be classified into two large categories: intensional definitions (which try to give the sense of a term), and extensional definit ...
.
Synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...
ous words and those related by the subject matter are to be found scattered around the dictionary, giving no obvious place for in-depth treatment. Thus, a dictionary typically provides limited
information Information is an Abstraction, abstract concept that refers to something which has the power Communication, to inform. At the most fundamental level, it pertains to the Interpretation (philosophy), interpretation (perhaps Interpretation (log ...
,
analysis Analysis (: analyses) is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (38 ...
or background for the word defined. While it may offer a definition, it may leave the reader lacking in
understanding Understanding is a cognitive process related to an abstract or physical object, such as a person, situation, or message whereby one is able to use concepts to model that object. Understanding is a relation between the knower and an object of u ...
the meaning, significance or limitations of a term, and how the term relates to a broader field of knowledge. To address those needs, an encyclopedia article is typically not limited to simple definitions, and is not limited to defining an individual word, but provides a more extensive meaning for a ''subject or
discipline Discipline is the self-control that is gained by requiring that rules or orders be obeyed, and the ability to keep working at something that is difficult. Disciplinarians believe that such self-control is of the utmost importance and enforce a ...
''. According to Mariam-Webster definition on encyclopedia, "a work that contains information on all branches of knowledge or treats comprehensively a particular branch of knowledge usually in articles arranged alphabetically often by subject". In addition to defining and listing synonymous terms for the topic, the article can treat the topic's more extensive meaning in more depth and convey the most relevant accumulated knowledge on that subject. An encyclopedia article also often includes many
map A map is a symbolic depiction of interrelationships, commonly spatial, between things within a space. A map may be annotated with text and graphics. Like any graphic, a map may be fixed to paper or other durable media, or may be displayed on ...
s and
illustration An illustration is a decoration, interpretation, or visual explanation of a text, concept, or process, designed for integration in print and digitally published media, such as posters, flyers, magazines, books, teaching materials, animations, vi ...
s, as well as
bibliography Bibliography (from and ), as a discipline, is traditionally the academic study of books as physical, cultural objects; in this sense, it is also known as bibliology (from ). English author and bibliographer John Carter describes ''bibliograph ...
and
statistics Statistics (from German language, German: ', "description of a State (polity), state, a country") is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. In applying statistics to a s ...
. In addition, sometimes books or reading lists are compiled from a compendium of articles (either wholly or partially taken) from a specific encyclopedia.


Four major elements

Four major elements define an encyclopedia: its subject matter, its scope, its method of organization, and its method of production: # Encyclopedias can be general, containing articles on topics in every field (the English-language ''
Encyclopædia Britannica The is a general knowledge, general-knowledge English-language encyclopaedia. It has been published by Encyclopædia Britannica, Inc. since 1768, although the company has changed ownership seven times. The 2010 version of the 15th edition, ...
'' and German '' Brockhaus'' are well-known examples). General encyclopedias may contain guides on how to do a variety of things, as well as embedded dictionaries and
gazetteer A gazetteer is a geographical dictionary or wikt:directory, directory used in conjunction with a map or atlas.Aurousseau, 61. It typically contains information concerning the geographical makeup, social statistics and physical features of a co ...
s. There are also encyclopedias that cover a wide variety of topics from a particular cultural, ethnic, or national perspective, such as the ''
Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...
'' or ''
Encyclopaedia Judaica The ''Encyclopaedia Judaica'' is a multi-volume English-language encyclopedia of the Jewish people, Judaism, and Israel. It covers diverse areas of the Jewish world and civilization, including Jewish history of all eras, culture, Jewish holida ...
''. # Works of encyclopedic scope aim to convey the important accumulated knowledge for their subject domain, such as an encyclopedia of
medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
,
philosophy Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
or
law Law is a set of rules that are created and are enforceable by social or governmental institutions to regulate behavior, with its precise definition a matter of longstanding debate. It has been variously described as a science and as the ar ...
. Works vary in the breadth of material and the depth of discussion, depending on the
target audience The target audience is the intended audience or readership of a publication, advertisement, or other message catered specifically to the previously intended audience. In marketing and advertising, the target audience is a particular group of cons ...
. # Some systematic methods of organization are essential to making an encyclopedia usable for reference. There have historically been two main methods of organizing printed encyclopedias: the
alphabetical Alphabetical order is a system whereby character strings are placed in order based on the position of the characters in the conventional ordering of an alphabet. It is one of the methods of collation. In mathematics, a lexicographical order is ...
method (consisting of several separate articles, organized in alphabetical order) and organization by
hierarchical A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an importan ...
categories. The former method is today the more common, especially for general works. The fluidity of
electronic media Electronic media are media that use electronics or electromechanical means for the audience to access the content. This is in contrast to static media (mainly print media), which today are most often created digitally, but do not require ele ...
, however, allows new possibilities for multiple methods of organization of the same content. Further, electronic media offer new capabilities for search, indexing and
cross reference The term cross-reference (abbreviation: xref) can refer to either: * An instance within a document which refers to related information elsewhere in the same document. In both printed and online dictionaries cross-references are important because ...
. The epigraph from
Horace Quintus Horatius Flaccus (; 8 December 65 BC – 27 November 8 BC), Suetonius, Life of Horace commonly known in the English-speaking world as Horace (), was the leading Roman lyric poet during the time of Augustus (also known as Octavian). Th ...
on the title page of the 18th century ''Encyclopédie'' suggests the importance of the structure of an encyclopedia: "What grace may be added to commonplace matters by the power of order and connection." # As modern multimedia and the information age have evolved, new methods have emerged for the collection, verification, summation, and presentation of information of all kinds. Projects such as Interpedia,
Everything2 Everything2 (styled Everything2 or E2 for short) is a collaborative online community consisting of a database of interlinked user-submitted written material. E2 is moderated for quality, but has no formal policy on subject matter. Writing on E ...
, Microsoft
Encarta Microsoft ''Encarta'' is a discontinued Digital data, digital multimedia encyclopedia and search engine published by Microsoft from 1993 to 2009. Originally sold on CD-ROM or DVD, it was also available online via annual subscription, although ...
,
h2g2 The h2g2 website is a British-based collaborative online encyclopedia project. It describes itself as "an unconventional guide to life, the universe, and everything", in the spirit of the fictional publication ''The Hitchhiker's Guide to the ...
, and
Wikipedia Wikipedia is a free content, free Online content, online encyclopedia that is written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and La ...
are examples of new forms of the encyclopedia as
information retrieval Information retrieval (IR) in computing and information science is the task of identifying and retrieving information system resources that are relevant to an Information needs, information need. The information need can be specified in the form ...
becomes simpler. The method of production for an encyclopedia historically has been supported in both for-profit and non-profit contexts; such was the case of the ''
Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...
'' mentioned above which was entirely state-sponsored, while the ''Britannica'' was supported as a for-profit institution.


Encyclopedic dictionaries

Some works entitled "dictionaries" are similar to encyclopedias, especially those concerned with a particular field (such as the ''
Dictionary of the Middle Ages The ''Dictionary of the Middle Ages'' is a 13-volume encyclopedia of the Middle Ages published by the American Council of Learned Societies between 1982 and 1989. It was first conceived and started in 1975 with American medieval historian Jos ...
'', the ''
Dictionary of American Naval Fighting Ships The ''Dictionary of American Naval Fighting Ships'' (''DANFS'') is the official reference work for the basic facts about ships used by the United States Navy. When the writing project was developed the parameters for this series were designed to ...
'', and ''
Black's Law Dictionary ''Black's Law Dictionary'' is the most frequently used legal dictionary in the United States. Henry Campbell Black (1860–1927) was the author of the first two editions of the dictionary. History The first edition was published in 1891 by Wes ...
''). The ''
Macquarie Dictionary The ''Macquarie Dictionary'' () is a dictionary of Australian English. It is considered by many to be the standard reference on Australian English. It also pays considerable attention to New Zealand English. Originally it was a publishing proje ...
,'' Australia's national dictionary, became an
encyclopedic dictionary An encyclopedic dictionary typically includes many short listings, arranged alphabetically, and discussing a wide range of topics. Encyclopedic dictionaries can be general, containing articles on topics in many different fields; or they can s ...
after its first edition in recognition of the use of proper nouns in common communication, and the words derived from such proper nouns.


Differences between encyclopedias and dictionaries

There are some broad differences between encyclopedias and dictionaries. Most noticeably, encyclopedia articles are longer, fuller and more thorough than entries in most general-purpose dictionaries. There are differences in content as well. Generally speaking, dictionaries provide
linguistic Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
information about words themselves, while encyclopedias focus more on the things for which those words stand. Thus, while dictionary entries are inextricably fixed to the word described, encyclopedia articles can be given a different entry name. As such, dictionary entries are not fully translatable into other languages, but encyclopedia articles can be. In practice, however, the distinction is not concrete, as there is no clear-cut difference between factual, "encyclopedic" information and linguistic information such as appear in dictionaries. Thus encyclopedias may contain material that is also found in dictionaries, and vice versa. In particular, dictionary entries often contain factual information about the thing named by the word.


Pre-modern encyclopedias

The earliest encyclopedic work to have survived to modern times is the ''Natural History'' of
Pliny the Elder Gaius Plinius Secundus (AD 23/24 79), known in English as Pliny the Elder ( ), was a Roman Empire, Roman author, Natural history, naturalist, and naval and army commander of the early Roman Empire, and a friend of the Roman emperor, emperor Vesp ...
, a
Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of Roman civilization *Epistle to the Romans, shortened to Romans, a letter w ...
statesman living in the 1st century AD, a work indebted to
Varro Marcus Terentius Varro (116–27 BCE) was a Roman polymath and a prolific author. He is regarded as ancient Rome's greatest scholar, and was described by Petrarch as "the third great light of Rome" (after Virgil and Cicero). He is sometimes call ...
(1st century BCE). He compiled a work of 37 chapters covering
natural history Natural history is a domain of inquiry involving organisms, including animals, fungi, and plants, in their natural environment, leaning more towards observational than experimental methods of study. A person who studies natural history is cal ...
, architecture, medicine,
geography Geography (from Ancient Greek ; combining 'Earth' and 'write', literally 'Earth writing') is the study of the lands, features, inhabitants, and phenomena of Earth. Geography is an all-encompassing discipline that seeks an understanding o ...
, geology, and all aspects of the world around him. This work became very popular in antiquity, was one of the first classical manuscripts to be printed in 1470, and has remained popular ever since as a source of information on the
Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of Roman civilization *Epistle to the Romans, shortened to Romans, a letter w ...
world, and especially
Roman art The art of Ancient Rome, and the territories of its Republic and later Empire, includes architecture, painting, sculpture and mosaic work. Luxury objects in metal-work, gem engraving, ivory carvings, and glass are sometimes considered to be m ...
,
Roman technology Ancient Roman technology is the collection of techniques, skills, methods, processes, and engineering practices which supported Roman civilization and made possible the expansion of the Roman economy, economy and Military of ancient Rome, milit ...
and
Roman engineering The ancient Romans were famous for their advanced engineering accomplishments. Technology for bringing running water into cities was developed in the east, but transformed by the Romans into a technology inconceivable in Greece. The architecture ...
. The Spanish scholar
Isidore of Seville Isidore of Seville (; 4 April 636) was a Spania, Hispano-Roman scholar, theologian and Roman Catholic Archdiocese of Seville, archbishop of Seville. He is widely regarded, in the words of the 19th-century historian Charles Forbes René de Montal ...
was the first Christian writer to try to compile a ''
summa Summa and its diminutive summula (plural ''summae'' and ''summulae'', respectively) was a medieval didactics literary genre written in Latin, born during the 12th century, and popularized in 13th century Europe. In its simplest sense, they might ...
'' of universal knowledge, the ''
Etymologiae (Latin for 'Etymologies'), also known as the ('Origins'), usually abbreviated ''Orig.'', is an etymological encyclopedia compiled by the influential Christian bishop Isidore of Seville () towards the end of his life. Isidore was encouraged t ...
'' (), also known by classicists as the ''Origines'' (abbreviated ''Orig''.). This encyclopedia—the first such Christian
epitome An epitome (; , from ἐπιτέμνειν ''epitemnein'' meaning "to cut short") is a summary or miniature form, or an instance that represents a larger reality, also used as a synonym for embodiment. Epitomacy represents "to the degree of." A ...
—formed a huge compilation of 448 chapters in 20 books based on hundreds of classical sources, including the . Of the ''Etymologiae'' in its time it was said ''quaecunque fere sciri debentur'', "practically everything that it is necessary to know". Among the areas covered were:
grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rul ...
,
rhetoric Rhetoric is the art of persuasion. It is one of the three ancient arts of discourse ( trivium) along with grammar and logic/ dialectic. As an academic discipline within the humanities, rhetoric aims to study the techniques that speakers or w ...
,
mathematics Mathematics is a field of study that discovers and organizes methods, Mathematical theory, theories and theorems that are developed and Mathematical proof, proved for the needs of empirical sciences and mathematics itself. There are many ar ...
,
geometry Geometry (; ) is a branch of mathematics concerned with properties of space such as the distance, shape, size, and relative position of figures. Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician w ...
,
music Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...
,
astronomy Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest includ ...
,
medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...
,
law Law is a set of rules that are created and are enforceable by social or governmental institutions to regulate behavior, with its precise definition a matter of longstanding debate. It has been variously described as a science and as the ar ...
, the
Catholic Church The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
and
heretical Heresy is any belief or theory that is strongly at variance with established beliefs or customs, particularly the accepted beliefs or religious law of a religious organization. A heretic is a proponent of heresy. Heresy in Christianity, Judai ...
sects,
pagan Paganism (, later 'civilian') is a term first used in the fourth century by early Christians for people in the Roman Empire who practiced polytheism, or ethnic religions other than Christianity, Judaism, and Samaritanism. In the time of the ...
philosopher Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
s,
language Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed language, signed forms, and may also be conveyed through writing syste ...
s,
cities A city is a human settlement of a substantial size. The term "city" has different meanings around the world and in some places the settlement can be very small. Even where the term is limited to larger settlements, there is no universally agree ...
,
animal Animals are multicellular, eukaryotic organisms in the Biology, biological Kingdom (biology), kingdom Animalia (). With few exceptions, animals heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, ...
s and
bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...
s, the
physical world The universe is all of space and time and their contents. It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from s ...
,
geography Geography (from Ancient Greek ; combining 'Earth' and 'write', literally 'Earth writing') is the study of the lands, features, inhabitants, and phenomena of Earth. Geography is an all-encompassing discipline that seeks an understanding o ...
,
public buildings A building or edifice is an enclosed Structure#Load-bearing, structure with a roof, walls and window, windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, a ...
,
road A road is a thoroughfare used primarily for movement of traffic. Roads differ from streets, whose primary use is local access. They also differ from stroads, which combine the features of streets and roads. Most modern roads are paved. Th ...
s,
metals A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. These properties are all associated with having electrons available at the Fermi level, as against no ...
,
rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wale ...
s,
agriculture Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created ...
,
ship A ship is a large watercraft, vessel that travels the world's oceans and other Waterway, navigable waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research and fishing. Ships are generally disti ...
s,
clothes Clothing (also known as clothes, garments, dress, apparel, or attire) is any item worn on a human human body, body. Typically, clothing is made of fabrics or textiles, but over time it has included garments made from animal skin and other thin s ...
,
food Food is any substance consumed by an organism for Nutrient, nutritional support. Food is usually of plant, animal, or Fungus, fungal origin and contains essential nutrients such as carbohydrates, fats, protein (nutrient), proteins, vitamins, ...
, and
tool A tool is an Physical object, object that can extend an individual's ability to modify features of the surrounding environment or help them accomplish a particular task. Although many Tool use by animals, animals use simple tools, only human bei ...
s. Another Christian encyclopedia was the ''Institutiones divinarum et saecularium litterarum'' of
Cassiodorus Magnus Aurelius Cassiodorus Senator (c. 485 – c. 585), commonly known as Cassiodorus (), was a Christian Roman statesman, a renowned scholar and writer who served in the administration of Theodoric the Great, king of the Ostrogoths. ''Senato ...
(543–560) dedicated to the Christian divinity and the seven liberal arts. The encyclopedia of
Suda The ''Suda'' or ''Souda'' (; ; ) is a large 10th-century Byzantine Empire, Byzantine encyclopedia of the History of the Mediterranean region, ancient Mediterranean world, formerly attributed to an author called Soudas () or Souidas (). It is an ...
, a massive 10th-century Byzantine encyclopedia, had 30,000 entries (broadly alphabetically arranged), many drawing from ancient sources that have since been lost, and often derived from medieval
Christian A Christian () is a person who follows or adheres to Christianity, a Monotheism, monotheistic Abrahamic religion based on the life and teachings of Jesus in Christianity, Jesus Christ. Christians form the largest religious community in the wo ...
compilers. From India, the Siribhoovalaya (Kannada: ಸಿರಿಭೂವಲಯ), variously dated to c. 800 AD, the 15th century, or an even more recent time, is a work of
Kannada Kannada () is a Dravidian language spoken predominantly in the state of Karnataka in southwestern India, and spoken by a minority of the population in all neighbouring states. It has 44 million native speakers, and is additionally a ...
literature written by Kumudendu Muni, a Jain monk. It is unique because rather than employing alphabets, it is composed entirely in
Kannada numerals The Kannada script (IAST: ''Kannaḍa lipi''; obsolete: Kanarese or Canarese script in English) is an abugida of the Brahmic scripts, Brahmic family, used to write Kannada, one of the Dravidian languages of South India especially in the state ...
. Many philosophies which existed in the Jain classics are eloquently and skillfully interpreted in the work. The 2nd century BC reference work ''
Shiben The ''Shiben'' or ''Book of Origins'' (Pinyin: ''shìběn''; Chinese; 世本; ) was an early Chinese encyclopedia which recorded imperial genealogies from the mythical Three Sovereigns and Five Emperors down to the late Spring and Autumn period ...
'' has been described as a Chinese encyclopedia of genealogies, while the '' Huanglan'', completed in the 220s, was an early '' leishu'' encyclopedia. The '' Yiwen Leiju'', completed in 624, was a landmark literature encyclopedia of the early
Tang dynasty The Tang dynasty (, ; zh, c=唐朝), or the Tang Empire, was an Dynasties of China, imperial dynasty of China that ruled from 618 to 907, with an Wu Zhou, interregnum between 690 and 705. It was preceded by the Sui dynasty and followed ...
. The enormous encyclopedic works of the ''
Four Great Books of Song The ''Four Great Books of Song'' () was compiled by a team of scholars during the Song dynasty (960–1279). The term was coined after the last book ('' Cefu Yuangui'') was finished during the 11th century. The four encyclopedias were published an ...
'', compiled by the 11th century during the early
Song dynasty The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Fiv ...
(960–1279), was a massive literary undertaking for the time. The last encyclopedia of the four, the '' Prime Tortoise of the Record Bureau'', amounted to 9.4 million
Chinese characters Chinese characters are logographs used Written Chinese, to write the Chinese languages and others from regions historically influenced by Chinese culture. Of the four independently invented writing systems accepted by scholars, they represe ...
in 1,000 written volumes. The ''
Yongle Encyclopedia The ''Yongle Encyclopedia'' () or ''Yongle Dadian'' () is a Chinese ''leishu'' encyclopedia commissioned by the Yongle Emperor (1402–1424) of the Ming dynasty in 1403 and completed by 1408. It comprised 22,937 manuscript rolls in 11,095 vol ...
'' (completed 1408) comprised 11,095 volumes, making it the largest paper encyclopedia in world history. There were many great encyclopedists throughout Chinese history, including the scientist and statesman
Shen Kuo Shen Kuo (; 1031–1095) or Shen Gua, courtesy name Cunzhong (存中) and Art name#China, pseudonym Mengqi (now usually given as Mengxi) Weng (夢溪翁),Yao (2003), 544. was a Chinese polymath, scientist, and statesman of the Song dynasty (960� ...
(1031–1095) with his ''
Dream Pool Essays ''The Dream Pool Essays'' (or ''Dream Torrent Essays'') was an extensive book written by the Chinese polymath and statesman Shen Kuo (1031–1095), published in 1088 during the Song dynasty (960–1279) of China. Shen compiled this encyclopedi ...
'' of 1088; the statesman, inventor, and agronomist Wang Zhen (active 1290–1333) with his ''Nong Shu'' of 1313; and
Song Yingxing Song Yingxing (Traditional Chinese: 宋應星; Simplified Chinese: 宋应星; Wade Giles: Sung Ying-Hsing; 1587–1666 AD) was a Chinese scientist and encyclopedist who lived during the late Ming Dynasty (1368–1644). He was the author of '' ...
(1587–1666) with his ''Tiangong Kaiwu''. Song Yingxing was termed the "
Diderot Denis Diderot (; ; 5 October 171331 July 1784) was a French philosopher, art critic, and writer, best known for serving as co-founder, chief editor, and contributor to the along with Jean le Rond d'Alembert. He was a prominent figure during t ...
of China" by British historian
Joseph Needham Noel Joseph Terence Montgomery Needham (; 9 December 1900 – 24 March 1995) was a British biochemist, historian of science and sinologist known for his scientific research and writing on the history of Chinese science and technology, initia ...
.


Printed encyclopedias

Before the advent of the printing press, encyclopedic works were all hand-copied and thus rarely available, beyond wealthy patrons or monastic men of learning: they were expensive, and usually written for those extending knowledge rather than those using it. The introduction of
printing Printing is a process for mass reproducing text and images using a master form or template. The earliest non-paper products involving printing include cylinder seals and objects such as the Cyrus Cylinder and the Cylinders of Nabonidus. The ...
from Asia allowed a wider diffusion of encyclopedias and every scholar could have his or her copy.
Nuremberg Chronicle The ''Nuremberg Chronicle'' is an illustrated encyclopedia consisting of world historical accounts, as well as accounts told through biblical paraphrase. Subjects include human history in relation to the Bible, illustrated mythological creatures, ...
from 1493 is one of the best-documented early printed books—an
incunabulum An incunable or incunabulum (: incunables or incunabula, respectively) is a book, pamphlet, or broadside that was printed in the earliest stages of printing in Europe, up to the year 1500. The specific date is essentially arbitrary, but the ...
—and one of the first to successfully integrate illustrations and text. Both Latin and German editions were printed by Anton Koberger in Nuremberg. The ''
De expetendis et fugiendis rebus ''De expetendis et fugiendis rebus'' (On seeking and avoiding things) is an encyclopedia which was compiled by Giorgio Valla in 49 books. Valla died in 1500 and the work was then published by his adopted son, Giovanni Pietro in 1501. It was p ...
'' by
Giorgio Valla Giorgio Valla (Latin: ''Georgius Valla''; Piacenza 1447–Venice January 23, 1500) was an Italian academic, mathematician, philologist and translator. Life He was born in Piacenza in 1447. He was the son of Andrea Valla and Cornelia Corvini. At ...
was posthumously printed in 1501 by
Aldo Manuzio Aldus Pius Manutius (; ; 6 February 1515) was an Italian printer and humanist who founded the Aldine Press. Manutius devoted the later part of his life to publishing and disseminating rare texts. His interest in and preservation of Greek manusc ...
in
Venice Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are li ...
. This work followed the traditional scheme of liberal arts. However, Valla added the translation of ancient Greek works on mathematics (firstly by
Archimedes Archimedes of Syracuse ( ; ) was an Ancient Greece, Ancient Greek Greek mathematics, mathematician, physicist, engineer, astronomer, and Invention, inventor from the ancient city of Syracuse, Sicily, Syracuse in History of Greek and Hellenis ...
), newly discovered and translated. The ''Margarita Philosophica'' by Gregor Reisch, printed in 1503, was a complete encyclopedia explaining the
seven liberal arts 7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive integers, the number seven has symbolic associations in religion, mythology, supers ...
. Financial, commercial, legal, and intellectual factors changed the size of encyclopedias. Middle classes had more time to read and encyclopedias helped them to learn more. Publishers wanted to increase their output so some countries like Germany started selling books missing alphabetical sections, to publish faster. Also, publishers could not afford all the resources by themselves, so multiple publishers would come together with their resources to create better encyclopedias. Later, rivalry grew, causing copyright to occur due to weak underdeveloped laws. John Harris is often credited with introducing the now-familiar alphabetic format in 1704 with his English ''Lexicon Technicum: Or, A Universal English Dictionary of Arts and Sciences: Explaining not only the Terms of Art, but the Arts Themselves'' – to give its full title. Organized alphabetically, its content does indeed contain an explanation not merely of the terms used in the arts and sciences, but of the arts and sciences themselves.
Sir Isaac Newton Sir Isaac Newton () was an English polymath active as a mathematician, physicist, astronomer, alchemist, theologian, and author. Newton was a key figure in the Scientific Revolution and the Enlightenment that followed. His book (''Mathe ...
contributed his only published work on chemistry to the second volume of 1710.


''Encyclopédie''


''Encyclopædia Britannica''


''Brockhaus Enzyklopädie''


Encyclopedias in the United States

In the United States, the 1950s and 1960s saw the introduction of several large popular encyclopedias, often sold on installment plans. The best known of these were '' World Book'' and '' Funk and Wagnalls''. As many as 90% were sold door to door. Jack Lynch says in his book '' You Could Look It Up'' that encyclopedia salespeople were so common that they became the butt of jokes. He describes their sales pitch saying, "They were selling not books but a lifestyle, a future, a promise of social mobility." A 1961 ''World Book'' ad said, "You are holding your family's future in your hands right now," while showing a feminine hand holding an order form. As of the 1990s, two of the most prominent encyclopedias published in the United States were ''
Collier's Encyclopedia ''Collier's Encyclopedia'' is a discontinued general encyclopedia first published in 1949 by P. F. Collier and Son in the United States. With ''Encyclopedia Americana'' and ''Encyclopædia Britannica, Collier's Encyclopedia'' became one of the t ...
'' and ''
Encyclopedia Americana ''Encyclopedia Americana'' is a general encyclopedia written in American English. It was the first general encyclopedia of any magnitude to be published in North America. With '' Collier's Encyclopedia'' and ''Encyclopædia Britannica, Encyclo ...
''.


Digital encyclopedias


Physical media

By the late 20th century, encyclopedias were being published on
CD-ROM A CD-ROM (, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains computer data storage, data computers can read, but not write or erase. Some CDs, called enhanced CDs, hold b ...
s for use with
personal computers A personal computer, commonly referred to as PC or computer, is a computer designed for individual use. It is typically used for tasks such as Word processor, word processing, web browser, internet browsing, email, multimedia playback, and PC ...
. This was the usual way computer users accessed encyclopedic knowledge from the 1980s and 1990s. Later,
DVD The DVD (common abbreviation for digital video disc or digital versatile disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any ki ...
discs replaced CD-ROMs, and by the mid-2000s, internet encyclopedias were dominant and replaced disc-based software encyclopedias. CD-ROM encyclopedias were usually a
macOS macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...
or
Microsoft Windows Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
(3.0, 3.1 or 95/98) application on a CD-ROM disc. The user would execute the encyclopedia's software program to see a menu that allowed them to start browsing the encyclopedia's articles, and most encyclopedias also supported a way to search the contents of the encyclopedia. The article text was usually
hyperlink In computing, a hyperlink, or simply a link, is a digital reference providing direct access to Data (computing), data by a user (computing), user's point and click, clicking or touchscreen, tapping. A hyperlink points to a whole document or to ...
ed and also included
photograph A photograph (also known as a photo, or more generically referred to as an ''image'' or ''picture'') is an image created by light falling on a photosensitivity, photosensitive surface, usually photographic film or an electronic image sensor. Th ...
s,
audio Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to: Sound *Audio signal, an electrical representation of sound *Audio frequency, a frequency in the audio spectrum *Digital audio, representation of sound ...
clips (for example in articles about historical speeches or musical instruments), and video clips. In the CD-ROM age, the video clips usually had a low resolution, often 160x120 or 320x240 pixels. Such encyclopedias which made use of photos, audio and video were also called multimedia encyclopedias.
Microsoft Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...
's ''
Encarta Microsoft ''Encarta'' is a discontinued Digital data, digital multimedia encyclopedia and search engine published by Microsoft from 1993 to 2009. Originally sold on CD-ROM or DVD, it was also available online via annual subscription, although ...
'', launched in 1993, was a landmark example as it had no printed equivalent. Articles were supplemented with video and audio files as well as numerous high-quality images. After sixteen years, Microsoft discontinued the Encarta line of products in 2009. Other examples of CD-ROM encyclopedia are
Grolier Grolier is one of the largest American publishers of general encyclopedias, including '' The Book of Knowledge'' (1910), '' The New Book of Knowledge'' (1966), ''The New Book of Popular Science'' (1972), '' Encyclopedia Americana'' (1945), '' Ac ...
Multimedia Encyclopedia and ''Britannica''. Digital encyclopedias enable "Encyclopedia Services" (such as Wikimedia Enterprise) to facilitate programmatic access to the content.


Online


Free encyclopedias

The concept of a free encyclopedia began with the Interpedia proposal on
Usenet Usenet (), a portmanteau of User's Network, is a worldwide distributed discussion system available on computers. It was developed from the general-purpose UUCP, Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Elli ...
in 1993, which outlined an Internet-based
online encyclopedia An online encyclopedia, also called an Internet encyclopedia, is a digital encyclopedia accessible through the Internet. Some examples include pre-World Wide Web services that offered the '' Academic American Encyclopedia'' beginning in 1980, Enc ...
to which anyone could submit content that would be freely accessible. Early projects in this vein included
Everything2 Everything2 (styled Everything2 or E2 for short) is a collaborative online community consisting of a database of interlinked user-submitted written material. E2 is moderated for quality, but has no formal policy on subject matter. Writing on E ...
and Open Site. In 1999,
Richard Stallman Richard Matthew Stallman ( ; born March 16, 1953), also known by his initials, rms, is an American free software movement activist and programmer. He campaigns for software to be distributed in such a manner that its users have the freedom to ...
proposed the GNUPedia, an online encyclopedia which, similar to the
GNU operating system GNU ( ) is an extensive collection of free software (394 packages ), which can be used as an operating system or can be used in parts with other operating systems. The use of the completed GNU tools led to the family of operating systems popu ...
, would be a "generic" resource. The concept was very similar to Interpedia, but more in line with Stallman's
GNU GNU ( ) is an extensive collection of free software (394 packages ), which can be used as an operating system or can be used in parts with other operating systems. The use of the completed GNU tools led to the family of operating systems popu ...
philosophy. It was not until
Nupedia Nupedia was a multi-language online encyclopedia whose articles were written by volunteer contributors with relevant subject-matter expertise, reviewed by expert editors before publication, and licensed as free content. It was founded by Jimmy ...
and later
Wikipedia Wikipedia is a free content, free Online content, online encyclopedia that is written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and La ...
that a stable free encyclopedia project could be established on the Internet. The
English Wikipedia The English Wikipedia is the primary English-language edition of Wikipedia, an online encyclopedia. It was created by Jimmy Wales and Larry Sanger on 15 January 2001, as Wikipedia's first edition. English Wikipedia is hosted alongside o ...
, which was started in 2001, became the world's largest encyclopedia in 2004 at the 300,000 article stage. By late 2005, Wikipedia had produced over two million articles in more than 80 languages with content licensed under the
copyleft Copyleft is the legal technique of granting certain freedoms over copies of copyrighted works with the requirement that the same rights be preserved in derivative works. In this sense, ''freedoms'' refers to the use of the work for any purpose, ...
GNU Free Documentation License The GNU Free Documentation License (GNU FDL or GFDL) is a copyleft license for free documentation, designed by the Free Software Foundation (FSF) for the GNU Project. It is similar to the GNU General Public License, giving readers the rights ...
. Wikipedia had over 3 million articles in English and well over 10 million combined articles in over 250 languages. Today, Wikipedia has articles in English, over 60 million combined articles in over 300 languages, and over 250 million combined pages including project and discussion pages. Since 2002, other free encyclopedias appeared, including Hudong (2005–) and
Baidu Baike Baidu Baike (; zh, c= 百度 百科, p=Bǎidù Bǎikē, l=Baidu Encyclopedia, also known as Baidu Wiki) is a semi-regulated Chinese-language collaborative online encyclopedia owned by the Chinese technology company Baidu. Modelled after Wiki ...
(2006–) in Chinese, and Google's
Knol Knol was a Google project that aimed to include user-written articles on a range of topics. The lower-case term ''knol'', which Google defined as a "unit of knowledge", referred to an article in the project. Knol was often viewed as a rival to W ...
(2008–2012) in English. Some MediaWiki-based encyclopedias have appeared, usually under a license compatible with Wikipedia, including Enciclopedia Libre (2002–2021) in Spanish and Conservapedia (2006–),
Scholarpedia ''Scholarpedia'' is an English-language wiki-based online encyclopedia with features commonly associated with Open access (publishing), open-access online academic journals, which aims to have quality content in science and medicine. ''Scholarpe ...
(2006–), and
Citizendium Citizendium ( ; "the citizens' compendium of everything") is an English language, English-language wiki-based free content, free online encyclopedia launched by Larry Sanger, co-founder of Nupedia and Wikipedia. Larry Sanger had worked as paid ...
(2007–) in English, the latter of which had become inactive by 2014.


See also

* Bibliography of encyclopedias *
Biographical dictionary A biographical dictionary is a type of encyclopedic dictionary limited to biographical information. Many attempt to cover the major personalities of a country (with limitations, such as living persons only, in ''Who's Who'', or deceased people o ...
* Encyclopedic knowledge * Encyclopedism *
Fictitious entry Fictitious or fake entries are deliberately incorrect entries in reference works such as Dictionary, dictionaries, encyclopedias, maps, and directories, added by the editors as #Copyright traps, copyright traps to reveal subsequent plagiarism or ...
*
History of science and technology The history of science and technology (HST) is a field of history that examines the development of the understanding of the natural world (science) and humans' ability to manipulate it (technology) at different points in time. This academic discip ...
*
Lexicography Lexicography is the study of lexicons and the art of compiling dictionaries. It is divided into two separate academic disciplines: * Practical lexicography is the art or craft of compiling, writing and editing dictionaries. * Theoretical le ...
*
Library science Library and information science (LIS)Library and Information Sciences is the name used in the Dewey Decimal Classification for class 20 from the 18th edition (1971) to the 22nd edition (2003). are two interconnected disciplines that deal with info ...
*
Lists of encyclopedias For lists of encyclopedias, see: * List of encyclopedias by branch of knowledge * List of encyclopedias by date * List of encyclopedias by language * List of online encyclopedias See also * Bibliography of encyclopedias * List of almanacs * ...
*
Thesaurus A thesaurus (: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar me ...
* Speculum literature


Notes


References


Cited works

* * * * C. Codoner, S. Louis, M. Paulmier-Foucart, D. Hüe, M. Salvat, A. Llinares, ''L'Encyclopédisme. Actes du Colloque de Caen'', A. Becq (dir.), Paris, 1991. * * * * * * * * * * * * * * * *


External links


Encyclopaedia and Hypertext


– Biographical errors in encyclopedias and almanacs
"Encyclopedia"
– Diderot's article on the Encyclopedia from the original ''
Encyclopédie , better known as ''Encyclopédie'' (), was a general encyclopedia published in France between 1751 and 1772, with later supplements, revised editions, and translations. It had many writers, known as the Encyclopédistes. It was edited by Denis ...
''.
''De expetendis et fugiendis rebus''
– First Renaissance encyclopedia

* ttps://web.archive.org/web/20131109213126/http://reviews.cnet.com/1990-3118_7-6378998-1.html "Digital encyclopedias put the world at your fingertips" CNET article
Encyclopedias online
University of Wisconsin Stout listing by category
Chambers' ''Cyclopaedia''
1728, with the 1753 supplement
''Encyclopædia Americana''
1851,
Francis Lieber Francis Lieber (18 March 1798 – 2 October 1872) was a German-American jurist and political philosopher. He is best known for the Lieber Code, the first codification of the customary law and the laws of war for battlefield conduct, which serve ...
ed. (Boston: Mussey & Co.) at the University of Michigan Making of America site
''Encyclopædia Britannica''
articles and illustrations from 9th ed., 1875–89, and 10th ed., 1902–03. {{Authority control Works about history