Indexes books and journal articles on the history of the United States and Canada from prehistory to the present. 1954+
Print predecessor Writings on American History covering 1904-1954 is in Firestone's General & Humanities Reference (DR) Z1236.L331.
Oxford research encyclopedia of American history
Reader’s companion to American history
Reader's guide to American history.
Dictionary of American history
American foreign relations since 1600: a guide to the literature.
Blackwell Companions to US History:
A Companion to American Indian History
A Companion to Colonial America
A Companion to the American Revolution
A Companion to the era of Andrew Jackson
A Companion to the Civil War and Reconstruction
A Companion to 19th-Century America
A Companion to 20th-Century America
A Companion to Post-1945 America
A Companion to the Vietnam War
A Companion to the American South
A Companion to the American West
A Companion to American Cultural History
A Companion to American Environmental History
A Companion to American Women's History
A Companion to American Technology
A Companion to American Immigration
A Companion to American Environmental History
A Companion to American Foreign Relations
A Companion to American Military History
A Companion to California History
American National Biography Authoritative biographies of prominent Americans who are deceased. As with the Oxford DNB, an excellent starting point.
Oxford Bibliographies Thorough bibliographies covering important works on many topics in history
Finding U.S. newspapers at Princeton
Periodicals
Television, radio and documentary film
Travel: literature and guidebooks
American History to 1900
Twentieth-century U.S. foreign affairs
Twentieth-century U.S. society and politics
U.S. economic, business and labor history
U.S. presidential papers
World War II
Vietnam War: primary sources
Legal research for historians: United States
U.S. Department of State records: for historians
Native American history
African American history
History of women, gender & sexuality
Historical statistics
Public opinion polls for historians
Historical U.S. census
Cross-searching tool for Gale primary source collections (including Eighteenth Century Collections Online, Nineteenth Century Collections Online, Indigenous Peoples: North America, and Brazilian and Portuguese History and Culture). Also allows users to analyze content using frequency and term-relationship tools.
Digital archive of U.S. history primary sources. Includes government documents, personal papers and organizational records.