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161. Historical United States County Boundaries, 1860

1860. 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 1860. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.

162. Historical United States County Boundaries, 1850

1850. 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 1850. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.

163. California Regional Transportation Planning Agencies, 2013

California. Department of Transportation. This polygon shapefile contains the boundaries of California Regional Transportation Planning Agencies (RTPA) as of February, 2014. These data were... California. Department of Transportation.

164. Counties: California, 2010

Bay Area Open Space Council, San Francisco Bay Area Upland Habitat Goals Project, GreenInfo Network (Firm), and San Francisco Bay Area Upland Habitat Goals Project. This polygon shapefile depicts the nine counties of California. This data was derived from the United States Census Bureau Topologically Integrated... Bay Area Open Space Council.

165. Farallon Islands, California, 2004

0. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile represents the Farallon Islands in California. This layer is part of a collection of data created by the California Deparmte... California. Department of Fish and Game. Marine Resources Region.

166. Impervious Surfaces: San Francisco Bay Area, California, 2009

Bay Area Open Space Council, Conservation Lands Network, GreenInfo Network (Firm), and San Francisco Bay Area Upland Habitat Goals Project. The National Land Cover Database 2001 (NLCD) for mapping zone 03 was produced through a cooperative project conducted by the Multi-Resolution Land ... Bay Area Open Space Council.