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Author/Creator
- United States. Bureau of the Census. Geography Division17
- United States. Bureau of the Census. Data Preparation Division6
- United States. Bureau of the Census. Population Division4
- Maps.com (Firm)3
- United States. Bureau of Transportation Statistics3
- Geological Survey (U.S.)2
- Andrews, Israel D. (Israel DeWolf), 1813-18711
- Best, Timothy C.1
- Biewick, Laura H.1
- Brabb, Earl E., 1929-1
- Brewer, Cynthia A., 1960-1
- Carnes, Mark C. (Mark Christopher), 1950-1
- Colgan, Joseph P.1
- Garraty, John A. (John Arthur), 1920-20071
- J.T. Paterson & Co.1
- Keefer, Thomas C., 1821-19151
- Mattson, Mark T.1
- Mitchell, S. Augustus (Samuel Augustus), 1792-18681
- National Oil and Gas Resource Assessment Team (U.S.)1
- Perley, Henry F.1