You searched for: Subject Boundaries Remove constraint Subject: Boundaries Place California Remove constraint Place: California Place United States Remove constraint Place: United States Place Connecticut Remove constraint Place: Connecticut Data type Polygon Remove constraint Data type: Polygon Year 1920 Remove constraint Year: 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.