| Y 4.W 12 | Select Committee to Investigate Wages and Prices (Senate) |
| Y4.W 19 | Committee on War Claims (House) |
| Y 4.W 21 | Select Committee to Investigate the Seizure of Montgomery Ward and Company (House) |
| Y 4.W 27 | Special Committee to Investigate the Washington Railway and Electrical Company (Senate) |
| Y 4.W 27/2 | Joint Committee on Metropolitan Washington Problems |
| Y 4.W 29 | Committee on Water Power |
| Y 4.W 36 | Committee on Ways and Means (House) |
| Y 4.W 45 | Select Committee on the Welfare and Education of Congressional Pages (House) |
| Y 4.W 56 | Select Committee on the Investigation of Charges against Burton K. Wheeler (Senate) |
| Y 4.W 58 | Select Committee to Conduct an Investigation and Study of the Financial Position of the White County Bridge Commission (House) |
| Y 4.W 64 | Special Committee on Wildlife Resources (Senate) |
| Y 4.W 64/2 | Select Committee on the Conservation of Wildlife Resources (House) |
| Y 4.W 74 | Select Committee to Investigate Certain Statements Made by Doctor William A. Wirt (House) |
| Y 4.W 84 | Select Committee on Woman Suffrage (Senate) |
| Y 4.W 88 | Special Committee to Investigate the Production, Transportation and Marketing of Wool (Senate) |
| Y 4.W 89 | Committee on World War Veterans Legislation (House) |
