Names
- Noyes, Theodore William, 1858-1946.1
- O'Brien, John J.1
- Olander, Oscar G. (Oscar Gustaf), 1899-1963.1
- Olson, Culbert L. (Culbert Levy), 1876-1962.1
- Osborn, Chase S. (Chase Salmon), 1860-1
- Osmeña, Sergio, 1878-1961.1
- Parker, Francis LeJau, 1873-1966.1
- Parsons, William Edward, 1872-1939.1
- Patterson, Robert Porter, 1891-1952.1
- Patton, George S. (George Smith), 1885-1945.1
- Pearson, Drew, 1897-1969.1
- Pepper, Claude, 1900-1989.1
- Perkins, Frances, 1882-1965.1
- Philippine War Relief of the United States.1
- Picard, Frank A., 1889-1963.1
- Pierpont Morgan Library.1
- Pinchot, Gifford, 1865-1946.1
- Pittman, Key, 1872-1940.1
- Pollock, James K. (James Kerr), 1898-1968.1
- Porter, Russell B.1