- Parke, Davis & Company, author.6
- Pascalis Ouviere, Felix, 1762-18336
- Pennsylvania. State Board of Health and Vital Statistics, author.6
- Peter, Robert, 1805-18946
- Peters, Christie, author6
- Philadelphia County Medical Society.6
- Pilcher, James Evelyn, 1857-1911, author6
- Porcher, Francis Peyre, 1825-1895, author6
- Potter, Samuel O. L. (Samuel Otway Lewis), 1846-19146
- Powers, Charles A., author6
- Price, Joseph, 1853-19116
- Prince, David, 1816-18896
- Prince, Morton, 1854-1929, author6
- Putnam, James Jackson, 1846-19186
- Raffet, Denis Auguste Marie, 1804-1860, artist6
- Ralph, Joseph (Joseph E.)6
- Ray, Isaac, 1807-1881, author6
- Reed, Walter, 1851-1902, author6
- Reynolds, Edward, 1860-1936, author6
- Richwine, Chelsea J., author6