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Legislative Histories: U.S. Congress http://www.lib.umich.edu/govdocs/legishis.html Comprehensive site.
Federal Legislative History Research: A Practitioner's Guide to Compiling the Documents and Sifting for Legislative Intent http://www.llsdc.org/Fed-Leg-Hist Century of Lawmaking for a Nation : U.S. Congressional Documents and Debates, 1774-1873 http://memory.loc.gov/ammem/amlaw/lawhome.htm
Schedule of Volumes of the U.S. Congressional Serial Set (1970 to Current) http://www.llsdc.org/sch-v/
Pennsylvania Legislative History : a Research Guide http://www.lawlib.duq.edu/research_guides/PENNSYLVANIALEGISLATIVEHISTORYrev.pdf
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