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- Ashe, W. W. (William Willard), 1872-1932. Southern Appalachian forests1
- Ayres, H. B. (Horace Beemer), b. 1856. Southern Appalachian forests1
- Baltimore Harbor Board1
- Baltimore Topographic Survey1
- Bauman, Wm. (William)1
- Bien, Julius, 1826-19091
- Brooks, Alfred H1
- Gannett, Henry, 1846-19141
- Geological Survey (U.S.)[remove]30
- Hill, Robert Thomas, 1858-19411
- Johnson, Willard D1
- Massachusetts. Topographical Survey Commission1
- Peters, W. J1
- Thompson, A. H. (Almon Harris), 1839-19061
- U.S. Coast and Geodetic Survey4
- U.S. Coast and Geodetic Survey.1
- United States. Army. Corps of Engineers. Little Rock District1
- United States. Army. Photographic Squadron, 1st1
- United States. Congress. (55th, 3rd : 1898)1
- United States. Dept. of the Interior1
