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1850. Thomas, William G., 1964-. This line shapefile represents the railroad network of the United States in 1850. This layer is part of the Railroads and the Making of Modern Amer... University of Nebraska--Lincoln.
1855. Thomas, William G., 1964-. This line shapefile represents the railroad network of the United States in 1855. This layer is part of the Railroads and the Making of Modern Amer... University of Nebraska--Lincoln.
1861. Thomas, William G., 1964-. This line shapefile represents the railroad network of the United States in 1861. This layer is part of the Railroads and the Making of Modern Amer... University of Nebraska--Lincoln.
1870. Thomas, William G., 1964-. This line shapefile represents the railroad system of the United States in 1870. This layer is part of the Railroads and the Making of Modern Ameri... University of Nebraska--Lincoln.
2005. Geological Survey (U.S.). This line shapefile represents railroads in the conterminous United States and Alaska at 1:2,000,000. This is a replacement for the December 1998 m... Geological Survey (U.S.).
2014. United States. Bureau of Transportation Statistics and Hunt, Raquel. The Rail Network is a comprehensive database of the United States railway system at 1:24,000 to 1:100,000 scale. This polyline shapefile covers all... United States. Bureau of Transportation Statistics.
2014. United States. Bureau of Transportation Statistics and Hunt, Raquel. The Rail Network is a comprehensive database of the nation's railway system at 1:24,000 to 1:100,000 scale. This point shapefile covers all 50 Stat... United States. Bureau of Transportation Statistics.
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This line shapefile represents roads in North America at 1:1,000,000 scale. The roads included in this layer are either those that connect major ce... Geological Survey (U.S.).
1796. Stanford University. Center for Spatial and Textual Analysis and Carey, Mathew, 1760-1839. This layer is a georeferenced raster image of a map of the United States originally created by Matthew Carey and engraved by William Barker. The or... Stanford Digital Repository.
2014. United States. Bureau of Transportation Statistics and Jessberger, Steven. This point shapefile contains the locations of travel monitoring station sin the United States. The attributes for these databases have been intent... United States. Bureau of Transportation Statistics.