Names
- North, Lucian Gregory, 1850-1925.1
- Notestein, Wallace, 1878-1969.1
- Novy, Frederick George, 1864-1957.1
- Oberholtzer, Ellis Paxson, 1868-1936.1
- Okkelberg, Peter Olaus, 1880-1
- Orr, H. Winnett (Hiram Winnett), 1877-1956.1
- Osborn, Chase S. (Chase Salmon), 18601
- Osborn, Chase S. (Chase Salmon), b. 18601
- Otis, Robert Burns, 1879-1
- Parker, Edward Foster.1
- Pattengill, Henry Romaine, 1852-1918.1
- Patterson, John C., 1838-1910.1
- Patterson, Robert Porter, 1891-1952.1
- Patton, Carl S. (Carl Safford), 1866-1939.1
- Patton, Carl S. (Carl Safford), 1891-1952.1
- Paxson, Frederic L. (Frederic Logan), 1877-1948.1
- Pearson, Karl G.1
- Pease, Theodore Calvin, 1887-1948.1
- Pelzer, Louis, 1879-1946.1
- Perkins, John A. (John Alanson), 1914-1