ProQuest LLC is an
Ann Arbor, Michigan Ann Arbor is a city A city is a large human settlement.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. I ...
-based global information-content and technology company, founded in 1938 as University Microfilms by Eugene B. Power. ProQuest provides applications and products for libraries. ProQuest started as a producer of microfilm products, then became an electronic publisher, and later grew through acquisitions. Today, the company provides tools for discovery and citation management, and platforms that allow library users to search, manage, use, and share research. ProQuest provides access to content, including dissertations, theses, ebooks, newspapers, periodicals, historical collections, governmental archives, cultural archives,"Jisc and ProQuest Enable Access to Essential Digital Content"
retrieved May 21, 2014
and other aggregated databases. This content is estimated to be around 125 billion digital pages.
retrieved May 21, 2014
Content is accessed most commonly through library Internet gateways. The current chief executive officer is Matti Shem Tov. ProQuest is part of
Cambridge Information Group Cambridge Information Group (CIG) is a privately held global investment firm focusing on information services, education and technology. It began as a firm providing services to academic publishers. It is headquartered in Bethesda, Maryland. As ...


ProQuest was founded as a microfilm publisher. It began publishing doctoral dissertations in 1939, has published more than 3 million searchable dissertations and theses, and is designated as an offsite digital archive for the United States Library of Congress. The company's scholarly content includes dissertations and theses, primary source material, ebooks, scholarly journals, historical and current newspapers and periodicals, data sources, and other content of interest to researchers. ProQuest Video Preservation and Discovery Service, allows libraries to preserve and provide access to their proprietary audio and video collections. In May 2014, ProQuest LLC also operated businesses under the following names: * Bowker provides bibliographic information management solutions to publishers, libraries and booksellers, and is the ISBN Agency for the United States. * Dialog is an online information service with more than 1.4 billion unique records curated for corporate, business and government researchers, with a focus on pharmaceutical, engineering and patent research. *EBL (Ebook Library), an ebook aggregator with a catalog of titles from academic publishers, serves academic, corporate and research libraries while supporting emerging collection development models such as patron-driven acquisition. * ebrary offers access to ebook collections, by subscription or a perpetual archive model, in subject packages tailored for academic, corporate, government, public and high school libraries.


Eugene PowerEugene B. Power (1905-1993) was a pioneering entrepreneur in the use of microfilm for the reproduction of scholarly publications. During World War II, Power directed the microfilming of thousands of rare books and other printed materials in British ...
, a 1930 M.B.A. graduate of the
University of Michigan The University of Michigan (UM, U-M, U of M, UMich, or Michigan) is a public university, public research university in Ann Arbor, Michigan. Founded in 1817 in Detroit, as the ''Catholepistemiad'', or the ''University of Michigania'', 20 years b ...
, founded the company as University Microfilms in 1938, preserving works from the
British Museum The British Museum, in the Bloomsbury Bloomsbury is a district in the West End of London. It is considered a fashionable residential area, and is the location of numerous cultural institution, cultural, intellectual, and educational inst ...
on microfilm. By June 1938, Power worked in two rented rooms from a downtown Ann Arbor funeral parlor, specializing in microphotography to preserve library collections. In his autobiography ''Edition of One'', Power details the development of the company, including how University Microfilms assisted the Office of Strategic Services, OSS during World War II. This work mainly involved filming maps and European newspapers so they could be shipped back and forth overseas more cheaply and discreetly. Power also noticed a niche market in dissertations publishing. Students were often forced to publish their own works in order to finish their doctoral degree. Dissertations could be published more cheaply as microfilm than as books. ProQuest still publishes so many dissertations that its ProQuest Dissertations and Theses, Dissertations and Theses collection (formerly called Digital Dissertations) has been declared the official U.S. off-site repository of the Library of Congress. The idea of universal adoption of microfilm publication of doctoral dissertations was furthered considerably by two articles researched and written by a then recent recipient of the doctorate in History at Stanford University. Vaughn Davis Bornet seized on the idea and published "Doctoral Dissertations and the Stream of Scholarship" and "Microfilm Publication of Doctoral Dissertations". As the dissertations market grew, the company expanded into filming newspapers and periodicals. The company's main newspaper database is ProQuest Newsstand. In 1962, Xerox acquired the company for 51,750 shares of Xerox common stock, worth about $7.9 million. Under Xerox's ownership, the name of the company changed several times, from University Microfilms to Xerox University Microfilms, to University Microfilms International, then shortened to UMI. In 1985 it was purchased from Xerox by Bell & Howell. In 1986, UMI acquired Data Courier, owner of ABI/INFORM, from the Barry Bingham Jr., Bingham family. In the 1980s, UMI began producing CD-ROMs that stored Bibliographic database, databases of periodicals abstracts and indexes. At a time when modem connections were slow and expensive, it was more efficient to mail database CD-ROMs regularly to subscribing libraries, who installed the discs on dedicated PCs. The ProQuest brand name was first used for databases on CD-ROM. An online service called ProQuest Direct was launched in 1995; its name was later shortened to just ProQuest. The bibliographic databases are mainly sold to schools, universities and libraries. In 1998, the company announced the "Digital Vault Initiative", purported to include 5.5 billion images digitized from UMI microfilm, including some of the best existing copies of major newspapers dating back 100 to 150 years, and Early English books dating back to the 15th century. While work continues to digitize the contents of the microfilm vault, ProQuest is already providing navigation of 125 billion digital pages, including nearly 20 million pages of newspaper content dating from pre-Revolutionary War America. In 1999, the company name changed to Bell & Howell Information and Learning, and then in 2001 to ProQuest Information and Learning; Bell & Howell renamed itself the ProQuest Company. Also in 1999, the company acquired Chadwyck-Healey, a one-time microfilm publishing company that was one of the first to produce full-text CD-ROM databases. This acquisition gave Proquest ownership of a 100+ person publishing operation based in Cambridge, England and became the basis for a substantial overseas expansion. During the 2000–2004 fiscal years, as well as the first three quarters of the 2005 fiscal year, ProQuest systematically overstated its net income. Cumulatively, pre-tax profits were overstated by 129.9 million dollars (or about 31 percent). In 2008, Voyager Learning Company and ProQuest's CFO (from the time of the earnings overstatements) settled SEC "charges without admitting or denying the allegations of the SEC's complaint". In 2001 ProQuest acquired Norman Ross Publishing, a small New York based microfilm publisher. In 2002 ProQuest acquired bigchalk.com, a company founded in 1999 with the combined assets of ProQuest's K-12 division and Infonautics Inc.'s K-12 business.. In 2004, ProQuest Information and Learning acquired Seattle start-up Serials Solutions, a venture providing access management and search services for content hosted by other companies. Also in 2004, the company acquired Copley Publishing Group. In 2006, ProQuest Company, then the parent company of ProQuest Information and Learning, sold it to
Cambridge Information Group Cambridge Information Group (CIG) is a privately held global investment firm focusing on information services, education and technology. It began as a firm providing services to academic publishers. It is headquartered in Bethesda, Maryland. As ...
, owner of R. R. Bowker. From the time of this sale, this article follows the history of ProQuest Information and Learning, not ProQuest Company. (ProQuest Company subsequently renamed itself to Voyager Learning Company, and later became part of Cambium Learning Group.) In 2007, ProQuest Information and Learning was merged with CSA (database company), CSA to form ProQuest CSA. Later that year it was renamed ProQuest LLC. In 2008, ProQuest LLC acquired complete ownership of RefWorks, a web-based citation manager of which it had been part owner since 2001. RefWorks was merged with ProQuest's existing COS business to form RefWorks/COS. Also in 2008, ProQuest acquired Dialog, a major online database firm, from Thomson Reuters. In 2010, ProQuest acquired two properties from LexisNexis, Congressional Information Service (CIS) and University Publications of America (UPA). CIS produced one of the world's most exhaustive online collections of legislative content and highly respected statistical works, while UPA included deep historical content sets. The acquisition included digital products and an expansive microfilm vault that would leverage ProQuest's strength in conversion from film to searchable electronic formats. In 2011, ProQuest acquired Ebrary, an online digital library of full texts of over 170,000 scholarly e-books. In 2013, ProQuest acquired Ebook Library (EBL), with plans to combine ebrary and EBL into a single e-book platform. In 2014, ProQuest acquired Pi2 Solutions, a privately owned company specializing in Drug Safety Triager (DST) & Product Literature Database (PLD) systems for the biopharmaceutical industry. The company aligned Pi2 Solutions with its ProQuest Dialog corporate information service. In 2015, ProQuest acquired SiPX and Coutts Information Services, including the MyiLibrary platform and the Online Acquisitions and Selection Information System (OASIS). In October 2015, ProQuest acquired Ex Libris Group, Ex Libris. It was to merge the Workflow Solutions division of ProQuest, which included the former Serials Solutions, into Ex Libris, with the enlarged entity to be named "Ex Libris, a ProQuest Company". In June 2016, ProQuest acquired Alexander Street Press, a provider of streaming videos and ebooks. In January 2020, ProQuest acquired Innovative_Interfaces, III]
Innovative Interfaces
a provider of technology solutions to academic and public libraries.


Among the products the company sells to clients such as public and research libraries are:

See also


External links

* {{DEFAULTSORT:ProQuest ProQuest, Educational publishing companies of the United States Publishing companies based in Michigan 1938 establishments in Michigan Bibliographic database providers Companies based in Ann Arbor, Michigan Publishing companies established in 1938 Xerox 2006 mergers and acquisitions