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Authors
- Parkhill, Clayton, author1
- Parkhill, Clayton.5
- Parrish, Joseph, 1779-1840 author1
- Parry, John S. (John Stubbs), 1843-18761
- Parry, John S. (John Stubbs), 1843-1876 author2
- Parsons, Ralph L. (Ralph Lyman), 1828-1914 author2
- Partridge, Edward L. (Edward Lassel), 1853-1930 author2
- Parvin, Theophilus, 1829-18981
- Pascalis Ouviere, Felix, 1762-18332
- Pastrana, Emilio.1
- Patek, Arthur J., author2
- Patrick, Hugh T. (Hugh Talbot), 1860-1939 author4
- Patterson, J. A., author1
- Pattison, Granville Sharp, 1791-18511
- Paulet, Juan Mariano, author1
- Pearse, Harry S., author1
- Peaslee, E. R. (Edmund Randolph), 1814-18781
- Peaslee, E. R. (Edmund Randolph), 1814-1878 author2
- Peck, Edward S., author2
- Peckham, Adelaide Ward, author1