Before you begin to gather legislative history documents, you may want to determine if a compiled source already exists. Don't recreate the wheel. Finding a compiled history could save you hours of research.
ProQuest CongressionalThis link opens in a new windowProvides access to federal bills and acts, committee reports and documents, testimony, rules and regulations, and legislative histories. Indexing begins with 1789 congressional publications and full text availability begins in late 1980s. Formerly known as Lexis Congressional.