- Dry, Camille N.1
- Ely, Charles W.1
- Finnegan, W. J.1
- Foster & Gunnell Mining Engineers1
- Geo. H. Walker & Co.1
- George F. Cram Company1
- Great Britain. Ordnance Survey1
- Greene Consolidated Gold Company.1
- Hawkins, Geo. T.1
- Hoempler, Carlos E. C1
- Iowa Publishing Co. (Davenport, Iowa)1
- J.N. Matthews Co.1
- JunieĢ, J.1
- Lee, William H. (William Henry), 1848-1913.1
- Levasseur, Emile, 1828-19111
- Mangum, A. W., cartographer, surveyor.1
- Miller, Joseph G.1
- Mills, Ira B.1
- Neill, N. P. (Nelson Prentice),cartographer,surveyor.1
- Ontario. Bureau of Mines1