- Peele, William T1
- Peters, W. J. (William John), 1863-19421
- Philippines. Bureau of Science1
- Post, W. S1
- Pronti, Domenico, 1750- engraver1
- Reaburn, D. L1
- Robertson, R. B.1
- Rogers, Richard K1
- Saunders and Otley1
- Schrader, Frank C. (Frank Charles), 1860-19441
- Semper, C. H.1
- St. John, O. H. (Orestes Henry)1
- Tatum, Sledge1
- Tatum, Sledge.1
- Taylor, S. E.1
- Time Traveler Maps (Firm)1
- Toth, Tibor G1
- Tweedy, Frank, 1854-19371
- United States. Army. Corps of Engineers1
- United States. Congress. Senate1