Using Manuscripts and Archives: A Tutorial (Yale) – An excellent introduction to methods for locating primary source material. Some of the information is specific to Yale, but there is considerable information for locating manuscript and archival materials in other repositories. A new version of this site is planned in the future, but the archived version remains relevant.
Reference at Your Desk (National Archives and Records Administration) – A set of quick reference tools, including links to archival institutions throughout the world, biographies, bibliographies, copyright information, vital records, statistical reports, and much more.
