- Library of Congress, Committee on Additional Accommodations for1
- Library, Committee on the17
- Library, Joint Committee on the1
- Light-House Board5
- Loans and Currency Division2
- Manufactures Committee9
- Manufactures, Committee on4
- Marine Hospital Service5
- McKinley, William, Joint Special Committee on Memorial Exercises in Memory of38
- Merchant Marine Commission11
- Merchant Marine and Fisheries Committee84
- Merchant Marine and Fisheries, Committee on the10
- Military Academy, Select Committee to Investigate Hazing at1
- Military Affairs Committee1,249
- Military Affairs, Committee on231
- Militia Committee6
- Militia, Committee on the2
- Mines and Mining Committee19
- Mines and Mining, Committee on14
- Mint Bureau5