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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1960. Geological Survey (U.S.). Contour interval 20 feet.;"Topography from aerial photographs by photogrammetric methods and by planetable surveys. Aerial photographs taken 1957";... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
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.
1877. United States. Army. Corps of Engineers. Scale 1:15,840; Scale 1:15,840; 2 maps on 1 sheet : hand colored; 34 x 29 cm, sheet 40 x 35 cm Thomas, George H.(George Henry), 1816-1870. Office of the Chief of Engineers.
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.).
1927. United States. Bureau of Public Roads. Eastern sheet Includes inset continuation of northern Kentucky counties: Boone, Kenton and Campbell.; "Data corrected to Jan. 31, 1927."; "Approved... Bureau of Public Roads (Washington, D.C).
1927. United States. Bureau of Public Roads. Eastern sheet Includes inset continuation of northern Kentucky counties: Boone, Kenton and Campbell.; "Data corrected to Jan. 31, 1927."; "Approved... Bureau of Public Roads (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.