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Author
Earle, Carville
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Subject
Boundaries
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Institution
Stanford
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Place
United States
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Data type
Polygon
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Year
1840
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1. Historical United States County Boundaries, 1840
1840. Earle, Carville, Heppen, John, Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology., Otterstrom, Samuel, and Cao, Changyong. This polygon shapefile contains county boundaries for the United States in 1840. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.