Federal – Congressional
- Special Committee Investigating the Munitions Industry, a.k.a. Nye Committee (1934-1936)
- Select Committee to Investigate the Interstate Migration of Destitute Citizens (1940-1942)
- Special Committee on Post War Economic Policy and Planning (1943-1945)
- Joint Committee on the Investigation of the Pearl Harbor Attack (1945-1946)
- United States Senate Committee on the Judiciary, Subcommittee to Investigate the Administration of the Internal
Security Act and Other Internal Security Laws (1948-1976) - United States Senate Special Committee to Investigate Organized Crime in Interstate Commerce, a.k.a. Kefauver Committee (1950-1951)
- Senate Permanent Subcommittee of the Committee on Government Operations, aka Army-McCarthy Hearings (1953-1955)
- Senate Select Committee on Improper Activities in the Labor or Management Field (1957-1959)
- Statement of Disbursements of the House (1970-2008)
- Senate Select Committee on Presidential Campaign Activities (1973)
- Senate Select Committee to Study Governmental Operations with Respect to Intelligence Activities, a.k.a. Church Committee (1975)
- Iran Contra Scandal (1986-1987)
- House Committee on Un-American Activities (indices: 1938-1954, 1955-1960, 1942-1947)