| Y 4.T 17 | Select Committee on the Investigation of the Tariff Commission (Senate) |
| Y 4.T 19 | Joint Committee on Tax Evasion and Avoidance |
| Y 4.T 19/2 | Special Committee on the Taxation of Governmental Securities and Salaries (Senate) |
| Y 4.T 19/3 | Select Committee to Investigate Tax-Exempt Foundations and Comparable Organizations (House) |
| Y 4.T 19/4 | Joint Committee on Taxation |
| Y 4.T 21 | Special Committee to Investigate Taylor and Other Systems of Shop Management |
| Y 4.T 23 | Joint Committee on Centennial of the Telegraph |
| Y 4.T 24 | Temporary National Economic Committee |
| Y 4.T 25 | Joint Committee on the Investigation of the Tennessee Valley Authority |
| Y 4.T 27/1 | Committee on Territories (House) |
| Y 4.T 27/2 | Committee on Territories and Insular Affairs (Senate) |
| Y 4.T 61 | Committee on the Causes of Reduction of American Tonnage |
| Y 4.T 68 | Select Committee on Transportation Routes to Seaboard |
| Y 4.T 68/2 | Committee on Transportation and Infrastructure (House) |
