permanent appropriation - Budget authority that becomes available as the result of previously enacted legislation (substantive legislation or prior appropriations act) and does not require current action by Congress. Budget authority is considered to be "current" if provided in the current session of Congress and "permanent" if provided in prior sessions.
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.