Creator
- Carey & Hart.1
- Carman, J. Ernest (Joel Ernest), b. 1882.1
- Chariton Basin Planning Board (Iowa)1
- Christiansen, A. J.1
- Clason Map Co.1
- Conrad, J.5
- Craig, Donald.1
- Desilver, Charles.1
- Dickson, Melzar M.1
- Dodd, Mead & Company1
- Easley, Frank.1
- Evinger, Morris I.1
- Freeman, Homer J.1
- Gamble, W. H. (William H.)3
- Geo. A. Ogle & Company5
- Geological Survey (U.S.)3
- Gillis, J. R.1
- Gray, Frank A.1
- Gray, Ormando Willis1
- Greenleaf, J. (Jeremiah), 1791-1864.2