Primary Sources Online
A local database of digitized collections of historical documents. Coverage

North Carolina ECHO (Exploring Cultural Heritage Online)
A portal to over 600 North Carolina museums, libraries, historical societies and archives.

American Memory
This database contains information on the historical collections for the National Digital Library of the Library of Congress. It enables researchers to search for specific topics on American History or to browse through more general subject areas.

National Union Catalog of Manuscript Collections
NUCMC, or the National Union Catalog of Manuscript Collections, is a free-of-charge cooperative cataloging program operated by the Library of Congress.

National Archives Information Locator
A searchable database of records held in the National Archives records centers. You can use NAIL to search descriptions for key words or topics, and then to retrieve digital copies of selected textual documents, photographs, maps, and sound recordings. This is not a complete database, but it is a good place to start.

Archives Hub
Database for finding aids in the archives of UK universities and colleges.