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- Geological Survey (U.S.)102
- Geological Survey (U.S.), issuing body80
- Hillebrand, W. F. (William Francis), 1853-192517
- Washington, Henry S. (Henry Stephens), 1867-193416
- Clarke, Frank Wigglesworth, 1847-193115
- Iddings, Joseph Paxson, 1857-192011
- Rosenbusch, H. (Harry), 1836-191411
- Bishop, A. C. (Arthur Clive)10
- Du Bray, E. A.9
- Geological Society of London, issuing body9
- Hamilton, William Roger9
- Kleeschulte, Michael J.9
- Woolley, Alan Robert9
- Coetsee, F.8
- Cotta, Bernhard von, 1808-18798
- Gauthier, Kevin8
- Mueller, Bruce8
- United States. Forest Service8
- Clements C. Fry Collection of Medical Prints and Drawings (Yale Medical Library, Historical Library)7
- Geological Society of London7