- United States. Congress. House. Committee on Un-American Activities3
- Foster, William Z.2
- Arévalo, Juan José1
- Avakian, Bob1
- Chamberlin, William Henry1
- Chambers, Whittaker1
- Communist Party of the United States of America1
- Delaney, Robert Finley1
- Fast, Howard1
- Galbraith, John Kenneth1
- Guttmann, Allen1
- Hicks, Granville1
- Hook, Sidney1
- Klehr, Harvey1
- Meyer, Hershel D.1
- Overstreet, H. A.1
- Pipes, Richard1
- Sakmyster, Thomas L.1
- Shils, Edward Albert1
- Sík, Endre1