Congressional Universe (LexisNexis) (1980-Current ) U.S. Congressional publications including laws (free access for current MHC faculty, staff, students, and Five College students with guest accounts).
Public and Private Laws (1995-Current) from the 104th congress to the present (GPO Access).
THOMAS (1989-Current) also includes the Congressional Record, treaties, and presidential nominations from the Library of Congress.
U.S. Statutes at Large "the permanent collection of all laws and resolutions enacted during each session of Congress"
Online Availabilty: 1789-1875 from the Library of Congress, 2003-2006 from GPO Access, and 1937-1986 in print MH Stacks, call number: KF 50 Folio, 4th floor Williston Library.
U.S. Code (1994 versions through 2000 editions, plus supplements) "Every six years, public laws still in effect and of a general and permanent nature are arranged by subject and incorporated into the United States Code. Thereafter, any reference to the statute should include the U.S.C. citation. It is divided by broad subjects into 50 titles." Also available at U.S. Code (Cornell University Law School) this version is generated from the most recent official version made available by the US House of Representatives.
Session Dates of Congress (1st to the Current) (Office of the Clerk) valuable information to know when searching specific legislation from a Congress.