- C.M. Foote & Co. (Minneapolis, Minnesota), 18881
- C.M. Foote & Co. (Minneapolis, Minnesota), 18941
- C.M. Foote Publishing Co. (Minneapolis, Minn.), 18921
- C.O. Titus1
- C.R. Allen Engr & Surveyor1
- C.S. Hammond & Co (New York), 19111
- C.S. Hammond & Co (New York, [New York)1
- C.S. Hammond & Co. (Incorporated) Engravers, Printers, Publishers 30 Church Street (Hudson Terminal) (New York)1
- C.S. Hammond (New York), 19111
- C.S. Hammond and Co (New York)1
- C.W. Chadwick1
- C.W. Davison (Minneapolis)1
- Cadell & Davies, & Longman, Hurst, Rees & Orme (London)1
- Cadell & Davies; London1
- Cady and Burgess1
- Calvert Lithographing Co. (Detroit, Mich.), 18991
- Camiros Ltd.1
- Canada Bank Note Co (Montreal)1
- Canada Engraving & Lithograph Company, Ltd (MontreĢal)1
- Canada, Dept. of Mines, Geological Survey (Ottawa)1