- Mangum, A. W.3
- Neill, N. P. (Nelson Prentice)3
- Newsom, John F. (John Flesher), 1869-19283
- Palmer, Thos. W. (Thomas W.)3
- Ulrich, H. P. (Herbert Paul), 1904-cartographer.3
- White, Frank W., C.E.3
- Ault, Curtis H.2
- Ball, T. H. (Timothy Horton), 1826-19132
- Bridgman, E. C.2
- Burke, R. T. Avon (Richard Thomas Avon), 1878-cartographer.2
- Colton, J. H. (Joseph Hutchins), 1800-18932
- Cox, E. T. (Edward Travers), 1821-19072
- Ellis, R. W. (Robert W.)2
- Frushour, Samuel S.2
- Geib, W. J.(Warren Jacob), 1880-cartographer.2
- Geological Survey (U.S.), cartographer.2
- Harper, Denver2
- Hart, John Fraser2
- Hefel, Toney C.2
- Kelley, John A., C.E., cartographer.2