2012. Rukstales, Kenneth S. (compiler). This polygon shapefile represents seismic hazards in the United States. The data represent a model showing the probability that ground motion will ... National Atlas of the United States.
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2005. Geological Survey (U.S.). This point shapefile contains the locations and attributes of significant, historic earthquakes that caused deaths, property damage, and geological... National Atlas of the United States.
2006. United States. Agricultural Research Service. This polygon shapefile portrays the spread, by year, of the Africanized honey bee (AHB) in the United States, Puerto Rico, and the U.S. Virgin Isla... National Atlas of the United States.
2005. Geological Survey (U.S.). This polygon shapefile portrays the state boundaries of the United States, and the boundaries of Puerto Rico and the U.S. Virgin Islands. The map l... Geological Survey (U.S.).
1878. United States. General Land Office. Gives longitude west from Washington and Greenwich.; "J. A. Williamson, Commissioner." 78 x 50 centimeters Scale approximately 1:760,320 General Ma... General Land Office.
1915. Dinsmore, A. F. Prime meridians: Greenwich, Washington.; Relief shown by shading.; Includes inset of Jackson. 82 x 51 centimeters Scale [1:760,320] 1 inch = 12 sta... General Land Office (Washington, D.C).
1890. Morton, Robert H. Prime meridians: Greenwich, Washington.; Relief shown by hachures. 81 x 51 centimeters Scale approximately 1:750,000 General Map Collection. General Land Office (Washington, D.C).
2005. National Atlas of the United States. This polygon shapefile portrays the time zones of the United States, Puerto Rico, and the U.S. Virgin Islands. Also included are the Greenwich Mean... National Atlas of the United States.
2005. National Atlas of the United States. The Topographic and Bathymetric Shaded Relief of North America map layer shows depth and elevation ranges using colors, with relief enhanced by sha... National Atlas of the United States.
2011. United States. Bureau of Transportation Statistics. This data set includes cities in the United States, Puerto Rico and the U.S. Virgin Islands. These cities were collected from the 1970 National Atl... U.S. Geological Survey.