You searched for: Author Cao, Changyong Remove constraint Author: Cao, Changyong Access Restricted Remove constraint Access: Restricted Place Illinois Remove constraint Place: Illinois Year 1880 Remove constraint Year: 1880
1880. 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 1880. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.