Names
- Mitchell, Stephen Arnold, 1903-1
- Monroney, Mike, 1902-1
- Montoya, Joseph Manuel, 1915-1
- Montoya, Joseph Manuel, 1915-1978.1
- Moody, Blair, 1902-1954.1
- Morse, Wayne L. (Wayne Lyman), 1900-1974.1
- Morse, Wayne Lyman, 1900-1
- Moss, Frank E., 1911-2003.1
- Moyers, Bill D.1
- Muskie, Edmund S., 1914-1
- Muskie, Edmund S., 1914-1996.1
- National Association for the Advancement of Colored People.1
- National Committee for a Sane Nuclear Policy (U.S.)1
- National Conference of Concerned Democrats.1
- National Rifle Association of America.1
- Neuberger, Maurine B. (Maurine Brown), 1907-2000.1
- Neuberger, Maurine Brown, 1907-1
- New Democratic Coalition (U.S.)1
- O'Brien, Lawrence Francis.1
- O'Hara, James G.1