- Mohl, Arthur F.1
- Monroe, Karmin1
- Morse, Wayne L. (Wayne Lyman), 1900-19741
- Morton, Thruston B. (Thruston Ballard), 1907-19821
- Muscogee (Creek) Nation, Oklahoma1
- National Association Of Real Estate Boards3
- National observer (Silver Spring, Md.)1
- Navajo Indians1
- Newman, M. W.1
- Novak, Robert1
- Ojibwa Indians1
- Oregon Association Of Realtors1
- Osage Tribe, Oklahoma2
- Otoe Nation1
- Otoe-Missouria Tribe of Nation1
- Ottawa Tribe1
- Pawnee Indian Tribe of Oklahoma2
- Peterson, Arthur1
- Poff, Richard H. (Richard Harding), 1923-20111
- Ponca Nation1
