- C.A. Pabodie & Son (Providence, RI) (1)
- C.A. Spina (?) (Vienna) (1)
- C.A.Spina (?) (Vienna) (1)
- C.B. Knox Gelatine Co (Johnstown, N.Y, 1924) (1)
- C.E. Knapp (Minneapolis), (1)
- C.F. Malvern (Winner SD) (1)
- C.F. Peters (Leipzig) (2)
- C.F. Peters Corporation (Leipzig), 1929 (1)
- C.I. Hood & Co. (Lowell, Mass.), 1904 (1)
- C.J. Peters & Son Co (Boston), 1907 (1)
- C.J. West (Minneapolis) (1)
- C.M Foote & Co. (Minneapolis, Minn.) (1)
- C.M. Foote & Co. (Minneapolis, Minnesota), 1888 (1)
- C.M. Foote & Co. (Minneapolis, Minnesota), 1894 (1)
- C.M. Foote Publishing Co. (Minneapolis, Minn.), 1892 (1)
- C.S. Hammond & Co (New York) (2)
- C.S. Hammond & Co (New York), 1911 (1)
- 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), 1911 (1)
