Names
- Norris, George W. (George William), 1861-1944.1
- 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. 1860.1
- Osborn, Henry Fairfield (1857-1935)1
- Osborn, Henry Fairfield, 1857-1935.1
- Osler, Sir William, 1849-1919.1
- Otis, Robert Burns, 1879-1
- Parker, Edward Foster.1
- Patterson, Merib Rowley.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
- Paxson, Frederic Logan, 1877-1948.1
- Peabody, George Foster (1852-1938)1
- Peabody, George Foster, 1852-1938.1
- Pearl, Raymond (1879-1940)1
- Pearl, Raymond, 1879-1940.1