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1998, 1999, 2000, 2001, and 2002. United States. Bureau of Transportation Statistics, United States. Federal Railroad Administration, and Environmental Systems Research Institute (Redlands, Calif.). This line shapefile represents a comprehensive database of the nation's railway system at 1:100,000 scale. The data set covers the 48 contiguous St... Environmental Systems Research Institute (Redlands, Calif.).
1816. Rumsey, David, 1944- and Scott, Bradford. This layer is a georeferenced image of a map of the United States in 1816. The original map appears in "North America; United States of America By ... Cartography Associates.
1820. Center for Spatial and Textual Analysis. This layer is a georeferenced image of a map of the United States. The original map was published in 'A Complete Genealogical, Historical, Chronolo... Stanford Digital Repository.
2016. United States. Department of Housing and Urban Development. The term "Unit of General Local Government" (UGLG) means a city, county, town, parish, village, or other general-purpose political subdivision of a... United States. Department of Housing and Urban Development.
University of Chicago Library. Website for finding and accessing open data provided by University of Chicago.
2013 and 2014. Applied Science Associates. The University of Maine (UMaine) deployed a temporary test turbine in Castine Harbor, ME approximately 0.25 km from shore in the spring of 2013. Th... Northeast Regional Ocean Council.
2019. Yuba County (Calif.). Information Technology Services. This polygon shapefile represents the boundaries of the Upham Cemetery District in Yuba County, California. This layer is a part of a collection of... Yuba County (Calif.). Information Technology Services.
2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the extent of the San Francisco Bay Area Upland Habitat Goals Project Study Area where the analysis occured, onto wh... Bay Area Open Space Council.
2017. Sierra Nevada Conservancy. This polygon shapefile contains the boundary of the Watershed Improvement Program's Upper Sacramento watershed. Sierra Nevada Conservancy.