- Peterson, E. Frank, cartographer1
- Rand McNally and Company , cartographer, publisher1
- Rand McNally and Company, cartographer1
- Rand McNally and Company, cartographer, publisher1
- Ravenstein, Ernst Georg, 1834-19131
- Richard, L.1
- Russell, Israel C. (Israel Cook), 1852-19061
- Schrader, Frank C. (Frank Charles), 1860-19441
- Schumacher, Gottlieb1
- Searle, O. Perry, creator1
- South Africa. Surveyor-General1
- Stoddard, Seneca Ray, 1844-1917, cartographer, publisher1
- Theo. F. Koch Land Company1
- Todd, J. E. (James Edward), 1846-19221
- Towl Engineering Co., cartographer1
- Twin Fall North Side Land & Water Co., publisher1
- Törnebohm, A. E. (Alfred Elis), 1838- cartographer1
- United States Reclamation Service, cartographer, publisher1
- United States. Bureau of Reclamation, cartographer, publisher1
- Walker Lith. & Pub. Co.1
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