- Lightfoot, James1
- Lowey, Nita1
- MacWilliams, Robinson and Partners1
- Mandell, Barbara1
- Marlboro Productions1
- McBeath, William H.1
- McCloskey, Frank1
- McEwen, Bob, 1950-1
- Meany, George, 1894-19801
- Mitchell, James P., 1900-19641
- Modern Videofilm1
- Mollohan, Alan1
- Moore, Mary Tyler, 1936-20171
- Morrisey, Patrick, 1967-1
- Mothers Against Drunk Driving (Organization)1
- Murkowski, Frank H.1
- Murphy, Austin J.1
- Nagle, David R. (David Ray), 1943-1
- National Association of Secondary School Principals (U.S.)1
- National Council on Disability (U.S.)1
