- Bond, Frank, 1856-19401
- Bourquin, Frederick, 1808-1
- Bracher, William1
- Brower, J. V. (Jacob Vradenberg), 1844-19051
- Brown, Treacy & Sperry Co. (Saint Paul, Minn.)1
- Burritt, Elijah H. (Elijah Hinsdale), 1794-18381
- Burrus, R. F.1
- C.M. Foote & Co. (Minneapolis, Minn.)1
- C.S. Hammond & Company1
- C.S. Mendenhall (Firm)1
- Canoe Country Outfitters1
- Clark, C. W. (Engineer)1
- Cleveland, H. W. S. (Horace William Shaler), 1814-19001
- Colby, Charles Galusha, 1830-1866?1
- Colton, J. H. (Joseph Hutchins), 1800-18931
- Columbia Planograph Co.1
- Comber, W. G.1
- Cook, R.1
- Cooley, George W.1
- Cooley, George W.(George Washington)1