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Full text 1985 to present [formerly LexisNexis Congressional]
Westlaw Campus Research
Full text of the daily edition of the Congressional Record, 1985 to present
The U.S. Senate Reference website lists numbered sessions of Congress with corresponding calendar years:
http://www.senate.gov/
Smith has access to academic versions of LexisNexis and Westlaw, as well as Hein Online.
Links are on the Government subject guide.
Or use Reseach Tools > Databases by Title