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- Geological Survey (U.S.)5
- Gannett, Henry, 1846-19144
- United States. General Land Office4
- Yeager, E. (Edward)4
- Bond, Frank, 1856-19403
- Colton, J. H. (Joseph Hutchins), 1800-18933
- Desilver, Charles3
- Disturnell, John, 1801-18773
- Ensigns & Thayer3
- Hazzard, J. L3
- Canadian Pacific Railway Company2
- Duluth, South Shore, and Atlantic Railway Company2
- Duluth, South Shore, and Atlantic Railway Company--Maps2
- Geographical and Geological Survey of the Rocky Mountain Region (U.S.)2
- Maury, Matthew Fontaine, 1806-18732
- Powell, John Wesley, 1834-19022
- Sowle & Ward2
- United States. Army. Corps of Engineers. Engineer Office2
- Virginia Military Institute2
- A. Hoen & Co1
