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Authors
- Palmer, O. A. (Owen Abraham), 1848- author1
- Pancoast, Joseph, 1805-18823
- Pancoast, S. (Seth), 1823-18894
- Pandey, Rajshree, author1
- Pani, Alberto J., 1878-1955, author1
- Paris, John Ayrton, 1785-18568
- Park, Robert Ezra, 1864-1944 author1
- Park, Roswell, 1852-1914 author1
- Parke, Davis & Company, author.1
- Parke, Davis & Company.2
- Parke, J. Richardson, author1
- Parker, Edward F. (Edward Frost), 1867-1938, author1
- Parker, Linette A. (Linette Althana) author1
- Parker, William H. (William Humboldt)1
- Parkes, Louis Coltman, 1857-1942 author1
- Parkin, John, 1801-18861
- Parks, Robert J., author1
- Parr, Bartholomew, 1750-18102
- Parreidt, Julius, author1
- Parris, Samuel Bartlett, 1806-18271