OECD iLibrary is an online library of books, papers and statistics published by the Organisation for Economic Cooperation and Development (OECD).

JSTOR is one of the largest and most reputable journal archives in the world. The content set currently available to the Wikipedia editors includes all of JSTOR's archival journal collections and the 19th Century British Pamphlets collection.

SPIE is providing access to SPIE Digital Library, one of the largest collections of optics and photonics applied research. The resources are available as journals and eBooks.

Cochrane is providing access to the Cochrane Library; a collection of 6 databases on medical topics including systematic reviews and assessment and evaluation databases.

Adam Matthew Digital publishes databases of primary sources and accompanying supporting material; we have access to a large number of databases relevant to major topics in American and World History.

Wiley offers collections of online journals, books, and research resources, covering life, health, social, and physical sciences.

ProQuest is a multidisciplinary research provider. This access includes ProQuest Central, which includes a large collection of journals and newspapers, Literature Online, the HNP Chinese Newspaper Collections, and the Historical New York Times.

The British Newspaper Archive provides access to searchable digitized archives of British and Irish newspapers.

Edward Elgar is an independent academic and professional publisher with a strong focus on law, business and the social sciences.

NewspaperARCHIVE.com is an online database of digitized newspapers, with over 2 billion news articles; coverage extends from 1607 to the present from US, Canada, the UK, and 20 other countries.

Elsevier's ScienceDirect includes over 2,500 journals, 900 serials and 26,000 book titles. Journals include, among others, The Lancet, Cell, Current Biology, Biomaterials, Biological Psychiatry, Social Science & Medicine, Current Biology, Cognition, and Behavioural Brain Research.

Newspapers.com includes more than 800 million pages from 20,000+ newspapers. The collection includes some major newspapers for limited periods (e.g., 50 years of the New York Times), but mostly consists of US regional papers from the 1700s to the late 1980s. Free accounts through the Wikipedia Library include access to Newspapers.com Publisher Extra content.

MIT Press Journals is a scholarly publisher of over 30 journals in the humanities, sciences, and social sciences.

BMJ (originally the British Medical Journal) is a peer-reviewed medical journal.

SAGE Journals SAGE is an American independent publisher with more than 1,000 journals, from a wide range of disciplines.