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Author/Creator
- United States. Congress. House192
- United States. Geological Survey177
- Geological Survey (U.S.)151
- Geological Survey (U.S.), issuing body105
- United States. Department of the Interior34
- Campbell, Marius R., (Marius Robinson)21
- Geological Survey of Canada17
- Fletcher, Hugh, 1848-190913
- Senécal, C. O. (Clovis Omer)13
- United States. General Land Office13
- Collier, Arthur J., (Arthur James)12
- Geological Survey of Pakistan12
- Martin, G.C., (George Curtis)12
- United States. Congress. Senate12
- Ashley, George H., (George Hall)11
- Freedmen's Hospital (Washington, D.C.)11
- Howard University11
- United States. Architect of the Capitol11
- United States. Department of the Interior. Pension Office11
- United States. Patent Office (1793-1975)11