| Center for American History: Collections at the University of Texas examining the historical development of the United States. |
| Library of Congress American Memory: Hold primary source and archival materials relating to American culture and history. |
| National Archives: Holds the records of the United States Federal government. On-line access to art works, census data, U.S. legal manuscripts, the Federal Register and numerous additional materials. |
| National Union Catalog of Manuscript Collections (NUCMC): Cooperative cataloging program operated by the Library of Congress. Find information about the program, archives and manuscript repositories, and about topics of interest to archivists and their institutions' patrons. |
| Office of Technology Assessment Archive: OTA was established by Congress in 1972 to provide congressional committees with analyses of emerging, difficult, and often highly technical issues. |
| Seattle Archdiocesan Archives: Collection examines the Catholic Church in the Pacific Northwest, including sacramental, academic and corporate records, as well as photographs and artifacts. |
| The National Security Archive: An independent non-governmental research institute and library located at The George Washington University. The Archive collects and publishes declassified documents acquired through the Freedom of Information Act. |
| USPTO Web Patent Databases: The US Patent and Trademark Office (PTO) now offers World-Wide Web (Web) access to bibliographic and full-text patent databases. |
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