Names
- Oregon Railway and Navigation Company.1
- Osborn, Chase S. (Chase Salmon), b. 1860.1
- Osborn, Chase Salmon, 1860-1949.1
- Patrons of Husbandry. Michigan State Grange.1
- Paxson, Frederic L. (Frederic Logan), 1877-1948.1
- Peabody, Charles1
- Peabody, Charles.1
- Pennsylvania Railroad.1
- Perry, Maude Elaine Caldwell, 1873-19631
- Perry, Maude Elaine Caldwell, 1873-1963.1
- Perry, Stuart Hoffman, 1874-1957.1
- Pickard, Josiah Little, 1824-1914.1
- Pillsbury, W. B. (Walter Bowers), 1872-1960.1
- Pillsbury, Walter Bowers, 1872-1960.1
- Pinchot, Gifford, 1865-1946.1
- Pingree, Hazen S., 1840-1901.1
- Pingree, Hazen Smith, 1840-1901.1
- Pullman Company.1
- Quezon, Manuel Luis, 1878 1944.1
- Quezon, Manuel Luis, 1878-1944.1