The main search tools for finding books, articles, databases, archival collections, and more at Yale (and beyond) can all be found on the "Find, Request, and Use" page of the library's website. Here are a few quick refreshers, but be sure to visit the page for a full overview:
Background or "reference" sources are a great place to start your research. Reference works include bibliographies, scholarly encyclopedias, dictionaries, handbooks, and other sources that provide overviews of topics and suggestions for further reading.
Includes book series such as the Cambridge Histories and Cambridge Companions.
This is an extensive collection of annotated bibliographies that are keyword searchable and can also be browsed by subject area.
Lengthy chapters in the Oxford Handbooks usually provide helpful overviews of scholarly topics and historical literature, along with suggestions for further reading.
The Oxford Research Encyclopedias
The Oxford Research Encyclopedias are scholarly encyclopedias with informative articles, usually providing a discussion of the literature including primary sources.
Annotated bibliography of U.S. foreign relations, 1600-present
A large collection of resources. The Wiley Companions will be especially useful. Navigate to "Humanities" and then "History" in order to find a detailed listing of titles by subfield.
Joshua Cochran, Curator for American History and Diplomacy, Beinecke Rare Book & Manuscript Library, joshua.cochran@yale.edu
Robin Dougherty, Librarian for Middle East Studies, roberta.dougherty@yale.edu
James Kessenides, Kaplanoff Librarian for American History, james.kessenides@yale.edu
In addition to the online library catalog (Books+ and Orbis), reference sources, and footnotes in the sources you're already finding, subject-specific databases of journal articles, book reviews, and the like are another extremely helpful resource for finding secondary literature. Here are a few key ones that may be helpful for your research this semester: