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Author
- Geological Survey (U.S.)261
- Maryland Geological Survey7
- United States Coast Survey7
- United States Coast Survey, issuing body5
- Duigon, Mark T.4
- Froelich, A. J. (Albert Joseph), 1929-4
- Hondius, Hendrik, 1597-16514
- Darton, Nelson Horatio, 1865-19483
- Cloos, Ernst, 1898-19742
- Glaser, John D.2
- Maryland. Department of Geology, Mines, and Water Resources2
- Nicholson, W. L., cartographer2
- Nutter, Larry J.2
- Otton, E. G. (Edmond George), 1918-2
- Rand McNally and Company, cartographer2
- United States. Army Map Service2
- United States. Army Topographic Command2
- United States. Bureau of Public Roads2
- United States. Public Roads Administration2
- Amsden, Thomas William1
