Creator
- New World Club, Inc.1
- New York Guild for the Jewish Blind1
- New York Public Library1
- New York Times Company1
- New York Tuberculosis and Health Association1
- New York post1
- Oettingen, Alexander von, 1827-19051
- Olds, Herbert Vincent, 1913–19991
- Oppenheimer, Fred1
- Ostwald, Grete, 1882–19601
- Ostwald, Wolfgang, 1883-19431
- Otto Spamer (Firm)1
- Ōsaka, Yūkichi, 1866-19501
- Pantell, A. L.1
- Partington, J. R. (James Riddick), 1886-19651
- Patterson, Robert Porter, 1891-19521
- Paul Altman K.-G.1
- Paweck, Heinrich, 1870-19411
- Pechmann, Hans von, 1850-19021
- Peschkowsky, Paul1