1991. U.S. Census Bureau. and GeoLytics, Inc. District boundaries for the 102nd United States Congress, Jan. 3, 1991 to Jan. 3, 1993. Harvard Geospatial Library.
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1999. Bureau of Transportation Statistics, (comp.). The 106th Congressional District Boundaries data set contains geographic information for the political entities of the Congressional districts of t... Bureau of Transportation Statistics.
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line census 5-Digit ZIP code tabulation areas for the United States. The TIGER/Line Files are sha...
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line Census American Indian Tribal Subdivisions (AITS) for the United States. The TIGER/Line File...
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line Census American Indian/Alaska Native/Native Hawaiian areas for the United States. The TIGER/...
1998. Bureau of Transportation Statistics. The Bureau of Economic Analysis (BEA)database is a Geographic polygon dataset representing county based economic regions for the United States. Bureau of Transportation Statistics.
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line Census 111th congressional districts for the United States. The TIGER/Line Files are shapefi...
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line Census combined statistical areas for the United States. The TIGER/Line Files are shapefiles...
2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line census county subdivisions for the United States. The TIGER/Line Files are shapefiles and re...
2001. U.S. Census Bureau. Geography Division and Environmental Systems Research Institute (Redlands, Calif.). U.S. 107th Congressional Districts represents political boundaries for the U.S. 107th Congressional Districts. ESRI.