- Purdy, John, 1773-18431
- Québec (Province). Geological Services1
- Raisz, Erwin, 1893-19681
- Rand McNally and Company1
- Rand McNally and Company, cartographer1
- Robert de Vaugondy, Gilles, 1688-17661
- Robinson, Captain1
- Robinson, Wm. (William)1
- Roed, M. A., 1937-1
- Rogers & Smith Co., author1
- Rolph-Clark-Stone Limited1
- Senex, John, -17401
- Senécal, C. O. (Clovis Omer)1
- Shelton & Kensett, cartographer1
- Smith, Charles, active approximately 1800-1852, cartographer1
- Smith, J. Calvin (John Calvin), cartographer1
- Spencer Trask & Co.1
- Stanford, Edward, 1827-1904, cartographer1
- Stavely, Edward1
- Taylor, David, R.N., cartographer1
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