- Geological Survey (U.S.)405
- United States. Army Map Service.37
- Geologcial Survey (U.S.)12
- Marshall, R. B. (Robert Bradford), 1867-1949.12
- United States. Army. Corps of Engineers.9
- Smith, George Otis, 1871-1944.5
- Gannett, Henry, 1946-1914.3
- Walcott, Charles D. (Charles Doolittle), 1850-1927.2
- Gannett, Henry, 1846-1914.1
- Powell, John Wesley, 1834-1902.1
- Smith, George Otis, 1871-19441
- United States. Army. Corps of Engineers1
- United States. War Dept. Corps of Engineers.1