| Y 4.C 15 | Special Committee to Investigate Campaign Expenditures (House) |
| Y 4.C 16 | Committee on Relations with Canada (Senate) |
| Y 4.C 17 | Special Committee on the Centennial Celebration of the Laying of the Corner Stone of the Capitol |
| Y 4.C 17/2 | Commission for the Extension of the United States Capitol |
| Y 4.C 33/1 | Census Committee (House) |
| Y 4.C 33/2 | Census Committee (Senate) |
| Y 4.C 33/3 | Special Committee to Investigate the Centralization of Heavy Industry in the United States (Senate) |
| Y 4.C 33/4 | Select Committee to Study Censure Charges (Senate) |
| Y 4.C 43 | Joint Committee on the Dedication of Chickamauga and Chattanooga National Military Park |
| Y 4.C 43/2 | Select Committee on Children, Youth, and Families (House) |
| Y 4.C 44 | Congressional-Executive Commission on China (2000- ) |
| Y 4.C 49/1 | Civil Service Committee (House) |
| Y 4.C 49/2 | Civil Service Committee (Senate) |
| Y 4.C 49/3 | Select Committee on the Investigation of Illegal Appointments and Dismissals in the Civil Service (Senate) |
| Y 4.C 49/4 | Special Committee to Investigate the Administration and Operation of the Civil Service Laws (Senate) |
| Y 4.C 52/1 | Committee on Claims (House) |
| Y 4.C 52/2 | Committee on Claims (Senate) |
| Y 4.C 63 | Committee on Coast and Insular Survey (Senate) |
| Y 4.C 66 | Committee on Coinage, Weights and Measures (House) |
| Y 4.C 73/1 | Commerce Committee (House) |
| Y 4.C 73/2 | Committee on Commerce (Senate) |
| Y 4.C 73/3 | Special Committee to Investigate Communist Propaganda in the United States (House) |
| Y 4.C 73/4 | Select Committee to Investigate Commodity Transaction (House) |
| Y 4.C 73/5 | Select Committee on Communist Aggression (House) |
| Y 4.C 73/6 | Select Committee on Committees (House) (not in andriot) |
| Y 4.C 73/7 | Committee on Commerce, Science, and Transportation (Senate) |
| Y 4.C 73/8 | Committee on Energy and Commerce (House) |
| Y 4.C 75 | Joint Committee on the Conduct of the War |
| Y 4.C 76/1 | Conference Committees (House and Senate) |
| Y 4.C 76/2 | Joint Select Committee on the Importation of Contract Laborers, Convicts, and Paupers |
| Y 4.C 76/3 | Joint Committee on the Organization of Congress |
| Y 4.C 76/4 | Select Committee on Contribution Investigation (Senate) |
| Y 4.C 76/5 | Joint Committee on the Construction of the Building for the Museum of History and Technology for Smithsonian Institution |
| Y 4.C 76/6 | Special Committee on the Organization of Congress (Senate) |
| Y 4.C 76/7 | Committee on Congressional Operations (Joint) |
| Y 4.C 76/8 | Special Committee on Official Conduct (Senate) |
| Y 4.C 76/9 | Select Committee on Congressional Operations (House) |
| Y 4.C 81/1 | Select Committee to Investigate Alleged Corrupt Combinations of Members of Congress (House) |
| Y 4.C 81/2 | Select Committee to Investigate Alleged Corruptions in Government (House) |
| Y 4.C 86 | Select Committee to Investigate Alleged Credit Mobilier Bribery (House) |
| Y 4.C 86/2 | Special Committee to Investigate Organized Crime in Interstate Commerce (Senate) |
| Y 4.C 86/3 | Select Committee on Crime (House) |
| Y 4.C 88 | Select Committee on Crop Insurance (Senate) |
| Y 4.C 89 | Committee on Cuba Relations (Senate) |
| Y 4.C 333 | Centennial of the Establishment of the Seat of Government in Washington Commission |
