Search Constraints
You searched for:
Author
Cao, Changyong
Remove constraint Author: Cao, Changyong
Access
Restricted
Remove constraint Access: Restricted
Place
Arkansas
Remove constraint Place: Arkansas
Place
Texas
Remove constraint Place: Texas
Year
1920
Remove constraint Year: 1920
1 entry found
Search Results
1. Historical United States County Boundaries, 1920
1920. 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 1920. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.