- J.H. Colton & Co.15
- Ojakangas, Richard W.15
- Patterson, Carrie J.15
- Geological Survey of Canada14
- Sims, Paul K.14
- Southwick, David L.14
- Tipping, Robert G.14
- Winchell, N. H. (Newton Horace), 1839-191414
- Wyld, James, 1812-188714
- Berg, James A.13
- Clason Map Co.13
- George F. Cram Company13
- Harris, Kenneth L.13
- 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
- Alexander, E. C., Jr.11