| Y 4.Un 1 | Special Committee on Un-American Activities (Senate) |
| Y 4.Un 1/2 | Select Committee on Un-American Activities (House) |
| Y 4.Un 2 | Select Committee on Unemployment Insurance (Senate) |
| Y 4.Un 2/2 | Special Committee to Investigate Unemployment and Relief (Senate) |
| Y 4.Un 2/3 | Special Committee on Unemployment Problems (Senate) |
| Y 4.Un 3/1 | Select Committee to Establish University of the United States (Senate) |
| Y 4.Un 3/2 | Committee to Investigate the United States Steel Corporation (House) |
