Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House."

A union list of serials commencing publication after Dec. 31, 1949.

A directory of U.S. government statistics publications by issuing agency. Entries include GPO stock number, LC and Dewey classification, OCLC and ISSN numbers, and sometimes a description. Includes geographic index.