- United States. Bureau of Chemistry and Soils21
- Rennell, James, 1742-183019
- Shedd & Wright Mfg. Co.19
- L'Isle, Guillaume de, 1675-172618
- National Highways Association18
- Cary, John, approximately 1754-183517
- Sanborn Map Company17
- Young, J. H. (James Hamilton)16
- Cram, George Franklin, 1841-192815
- J.H. Colton & Co.15
- Geological Survey of Canada14
- Wyld, James, 1812-188714
- Clason Map Co.13
- George F. Cram Company13
- Mitchell, S. Augustus (Samuel Augustus), 1792-186813
- United States. Army. Corps of Engineers13
- Canada. Natural Resources Intelligence Service12
- Edward Stanford Ltd.12
- J. & C. Walker (Firm)12
- Aa, Pieter van der, 1659-173311