The ''Catholic Encyclopedia: An International Work of Reference on the Constitution, Doctrine, Discipline, and History of the Catholic Church'' (also referred to as the ''Old Catholic Encyclopedia'' and the ''Original Catholic Encyclopedia'') is an English-language

encyclopedia An encyclopedia (American English) or encyclopædia (British English) is a reference work or compendium providing summaries of knowledge either general or special to a particular field or discipline. Encyclopedias are divided into articles ...

published in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and designed to serve the

Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

. The first volume appeared in March 1907 and the last three volumes appeared in 1912, followed by a master index volume in 1914 and later supplementary volumes. It was designed "to give its readers full and authoritative information on the entire cycle of

Catholic The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

interests, action and doctrine". The ''Catholic Encyclopedia'' was published by the Robert Appleton Company (RAC), a

publishing Publishing is the activity of making information, literature, music, software and other content available to the public for sale or for free. Traditionally, the term refers to the creation and distribution of printed works, such as books, newsp ...

company incorporated at

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

in February 1905 for the express purpose of publishing the encyclopedia. The five members of the encyclopedia's Editorial Board also served as the directors of the company. In 1912 the company's name was changed to The Encyclopedia Press. Publication of the encyclopedia's volumes was the sole business conducted by the company during the project's lifetime.

Purpose

The encyclopedia was designed to serve the

, concentrating on information related to the Church and explaining matters from the Catholic point of view. It records the accomplishments of Catholics and others in nearly all intellectual and professional pursuits, including artists, educators, poets and scientists. While more limited in focus than other general encyclopedias, it was far broader in scope than previous efforts at comprehensive Catholic encyclopedias, which covered only internal Church affairs. It offers in-depth portrayals of historical and philosophical ideas, persons and events, from a Catholic perspective, including issues that divide Catholicism from

Protestantism Protestantism is a branch of Christianity that follows the theological tenets of the Protestant Reformation, a movement that began seeking to reform the Catholic Church from within in the 16th century against what its followers perceived to b ...

and other faith communities. Since the encyclopedia was first published starting in 1907 and has never been updated (versus the ''

New Catholic Encyclopedia The ''New Catholic Encyclopedia'' (NCE) is a multi-volume reference work on Roman Catholic history and belief edited by the faculty of The Catholic University of America. The NCE was originally published by McGraw-Hill in 1967. A second edition, ...

''), many of its entries may be out of date either with respect to the wider culture or to the Catholic

ecclesiastical {{Short pages monitor