"This historical archive contains . . . legislative history materials and other documents. It includes the complete Carlton Fox Collection which contains nearly 42 years of historical legislation related to the internal revenue laws from 1909-1950. It includes more than 100 other legislative histories related to taxation, economic reform, and stimulus plans. ." (HeinOnline)
Offers a range of U.S. legislative history materials including public laws and debates. Some pertinent libraries are "U.S. Congressional Documents," (includes Congressional Record et al.) "U.S. Federal Legislative History Library" and "U.S. Statutes at Large."
"ProQuest Legislative Insight is a Federal legislative history service that makes available thoroughly researched compilations of digital full- text publications created by Congress during the process leading up to the enactment of U.S. Public Laws."