supplemental, minority, and additional views - Senate Rule XXVI requires that, when a committee (other than the Appropriations Committee) reports a measure, committee members may have three days to file statements providing their views on the measure which will be included in the committee's written report.
Congressional Sessions lists all Congresses and corresponding years - from 1789, when the 1st Congress met, through the current Congress.
You can access legislative information, by bill number or key words, from the THOMAS Web site. Information from the present back to the 93rd Congress (1973) is available on THOMAS.
For information on the Senate, Congress, the legislative process and the federal government, the Virtual Reference Desk is a good place to begin.