Brooklyn Historical Society Library
Information about collections and exhibits, publications, membership, educational programs, and volunteer opportunities.
Civil War Online Document Library
Subscription-only searchable databases specializing in history, genealogy, classic literature, and general reference material related to the US Civil War.
The Library Company of Philadelphia
Specializes in the history and background of American culture from the colonial period to the end of the nineteenth century; with an overview of the collection, access to the online catalog, and general information.
US Holocaust Memorial Museum Library
Resources for family history and other research as well as access to the online catalog.