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141. Unified School Districts, California, 2000

2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in California. School districts are geographic entities within which state... U.S. Census Bureau. Geography Division.

142. Urbanized Areas, California, 2000

2000. California. Metropolitan Transportation Commission. This polygon shapefile contains the urbanized areas of California. These data were derived from the TIGER/2000 Urbanized Areas (UA) dataset of the ... California. Metropolitan Transportation Commission.

143. Islands and Rocks: California Coastal National Monument, 1998

1998. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile represents offshore rocks and islands that are part of the newly designated California Coastal National Monument (CCNM), und... California. Department of Fish and Game. Marine Resources Region.

144. 3 Nautical Mile Offshore Jurisdictional Boundary, California, 1999

1996. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile represents the 3 nautical mile offshore jusdictional boundary for the State of California. The file is a polyline digitized ... California. Department of Fish and Game. Marine Resources Region.

145. General Plan: Sacramento County, California, 1993

1993. Sacramento County GIS. This polygon shapefile depicts land use boundaries of the General Plan for unincorporated areas of the County of Sacramento, California as of 1993,... Sacramento County GIS.

146. Historical United States County Boundaries, 1990

1990. 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 1990. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.

147. State Boundaries with Demographics: California, Oregon, & Washington, 1990-1999

1990. California. Department of Fish and Game. Marine Resources Region and California. Department of Fish and Game. Marine Resources Region. This polygon shapefile contains the state boundaries for California, Oregon, & Washington. Statistical data such as population (1990 and 1999),... California. Department of Fish and Game. Marine Resources Region.

148. Urbanized Areas, California, 1990

1990. California. Metropolitan Transportation Commission. This polygon shapefile contains the urbanized areas of California. These data were derived from the TIGER/2000 Urbanized Areas (UA) dataset of the ... California. Metropolitan Transportation Commission.

149. Historical United States County Boundaries, 1980

1980. 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 1980. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.

150. Historical United States County Boundaries, 1970

1970. 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 1970. Attributes include county and state names as well as FIPS identifi... Geoscience Publications.