Congress.gov Library of Congress
The official website for U.S. federal legislative information.
• Text of bills from 1989 on; bill summary and status from 1973-1974 (93rd Congress) on.
Congressional Record Index, "History of Bills and Resolutions" section.
• Does not contain the text of the bills:
lists legislative actions on bills reported in the Congressional Record."
• Entries give the bill number, title, summary, sponsors and cosponsors,
and list actions on the bill giving the Congressional Record page and date.
e.g., S5798 [9JN] = Senate section, page 5798, June 9.
1983-1984 (98th Congress) on via govinfo.gov
1911- In the Library: 1st floor, Government Information Reference KF 35 .C6
congress.gov links to the history of specific bills from the Actions tabs from 1995-.