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Author
Cao, Changyong
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Author
Otterstrom, Samuel
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Publisher
Geoscience Publications
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Subject
Counties
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Institution
Stanford
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Alabama
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United States
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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.