Financial Disclosure reports, Clerk of the U.S. House of Representatives
Vital statistics on Congress, Brookings Institute
VoteView - Realtime Nominate ideology and related dated, from UCLA Department of Political Science
There are a number of agencies supporting the work of the Legislative Branch use to fulfill their role in the government, some of which are listed below:
One place you may always receive help with any government information research is Government Information Online (GIO) where librarians across the United States will assist you.