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81. Historical United States County Boundaries, 1800
1800. 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 1800. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.
82. Historical United States County Boundaries, 1790
1790. 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 1790. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.
83. 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.
84. New Jersey (Counties, 2003)
New Jersey. Department of Environmental Protection and United States Geological Survey. This data contains the county boundaries of New Jersey. Boundary lines were checked against other boundary delineations such as Patton, Hagstrom, ... USGS.
85. Portland County Lines
Metro Data Resource Center. Clackamas, Clark, Multnomah, Washington, Polk, Columbia, Marion and Yamhill county boundaries in Oregon and Clark, Cowlitz, Skamania county boundar... Metro Data Resource Center (Or.).
86. USA (Presidential Election Results by County, 2004)
Anthony Robinson. This data was compiled from multiple sources. The data file was downloaded from: http://www.personal.psu.edu/users/a/c/acr181/election.html. Robinson, Anthony (GeoVista Pennsylvania State University).