sergeant at arms - The chief security officer of the Senate, the sergeant at arms and staff in the office help to preserve order in the Senate chamber, the Senate galleries, and the Senate side of the Capitol. The sergeant at arms is elected by the Senate upon the nomination of the majority party conference.
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.