Searchable online access to the 16th (2010) edition. Also includes Chicago-Style Citation Quick Guide, and Chicago
Style Q and A (editors' answers to questions submitted by readers, updated monthly).

An online collection of encyclopedias, dictionaries, and other ready-reference books covering a range of topics, such as art, business, literature, and science. With a network of cross-references that provide an easy-to-follow trail to related information contained anywhere in Credo Reference, it provides trustworthy answers—and new connections—in context.

Access to the full text of authoritative electronic reference books; search or browse the collection or an individual title. Full text documents are available in HTML or PDF formats. Includes American Decades; American History through Literature; Dictionary of American History; Encyclopedia of U.S. Political History; Europe 1450-1789; Europe 1789-1914; Europe since 1914; History Behind the Headlines; and History in Dispute

Featuring the complete archive of the magazine to the mid-1990s, National Geographic Magazine Archive, 1888-1994, includes every page and every photograph, all fully searchable through an intuitive interface.

Search the full text of Oxford University Press History.