- Laws, Committee on Revision of24
- Laws, Committee on Revision of, House57
- Laws, Select Committee on Revision of4
- Laws, Special Joint Committee on Revision of4
- Legislative Budget Joint Committee2
- Legislative Counsel Office2
- Library Committee259
- Library Committee, House334
- Library Committee, Senate69
- Library Joint Committee14
- Lincoln Memorial Commission7
- Lobby Investigation Select Committee4
- Lobbying Activities, Select Committee on, House6
- Lobbying Activities, Special Committee to Investigate, Senate10
- Locomotive Inspection Bureau1
- Lorimer, William, Committee to Investigate Election of14
- Manufactures Committee55
- Manufactures Committee, Senate21
- Marshall, H. Snowden, Select Committee to Consider Report of House Judiciary Committee Relative to Conduct of1
- Members of Congress, Select Committee to Investigate Alleged Charges Against1