Creator
- Post, C. W.1
- Post, Charles C.2
- Post, Mary A.5
- Potter, C. M.1
- Potts, Robert B.3
- Powell, John Wesley, 1834-19027
- Preston, Robert E., 1836–191112
- Pugh, Evan, 1828-18641
- Puryear, B.2
- Quay, Matthew Stanley, 1833-19041
- Rand, B. Howard (Benjamin Howard), 1827-18831
- Read, Zach1
- Reese, John J. (John James), 1818-18925
- Reese, William S.1
- Remsen, Ira, 1846-19271
- Rensselaer Polytechnic Institute1
- Richardson, William A. (William Adams), 1821-18961
- Ringwalt, J. Luther (John Luther)1
- Robertson, Andrew1
- Robinson, David1