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You searched for: Author Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology. Remove constraint Author: Louisiana State University (Baton Rouge, La.). Department of Geography and Anthropology. Subject Boundaries Remove constraint Subject: Boundaries Place California Remove constraint Place: California Data type Polygon Remove constraint Data type: Polygon Year 1940 Remove constraint Year: 1940
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1. Historical United States County Boundaries, 1940

1940. 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 1940. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.