The document discusses several key Congressional staff agencies: the Library of Congress, founded in 1800, serves as the research library for Congress and other government branches; the Congressional Research Service, founded in 1914, provides nonpartisan policy analysis for committees; the Congressional Budget Office, formed in 1974, gives nonpartisan reports on fiscal policy and the impacts of alternative policies; the Government Accountability Office, formed in 1921, audits and investigates for Congress and evaluates federal spending; and the Government Printing Office, founded in 1861, prints materials for Congress including the daily Congressional record. Lobbyists also provide expertise to committees on particular issues.