2005. Reed, John Calvin, Jr. 1930- and Bush, Charles A. This line shapefile contains lines with labels and tags for major geologic units in Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. In add... Geological Survey (U.S.).
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2005. Reed, John Calvin, Jr. 1930- and Bush, Charles A. This polygon shapefile contains polygon boundaries, tags and labels for major geologic units in Alaska, Hawaii, Puerto Rico and the U.S. Virgin Isl... Geological Survey (U.S.).
2014. National Atlas of the United States. This polygon shapefile includes Global Map data showing the counties and equivalent entities of the United States, Puerto Rico, and the U.S. Virgin... National Atlas of the United States.
2014. National Atlas of the United States. This line shapefile includes Global Map data showing the counties and equivalent entities of the United States, Puerto Rico, and the U.S. Virgin Is... National Atlas of the United States.
2014. National Atlas of the United States. This point shapefile includes Global Map data showing cities and towns in the United States, Puerto Rico, and the U.S. Virgin Islands. The data are... National Atlas of the United States.
2002. EROS Data Center. The grayscale Alaska shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain of Alaska at a resolution of ... National Atlas of the United States.
2005. EROS Data Center. The grayscale North America shaded relief data were derived from the GTOPO30 elevation data. GTOPO30 is a global digital elevation model (DEM) with... National Atlas of the United States.
1886. U.S. Coast and Geodetic Survey. Depth shown by soundings and isolines.; "No. 708."; "Printed Jan. 7, 1887. Issued from chart room 2-24-1888." 53 x 83 centimeters Scale 1:40,000; S... U.S. Coast and Geodetic Survey (Washington, D.C).
2011. National Atlas of the United States. This polygon shapefile portrays the hazardous waste generated, shipped, and received by state and other areas within the United States, Puerto Rico... National Atlas of the United States.
2010. National Geophysical Data Center. This map layer shows isogonic lines (lines of constant declination of the Earth's magnetic field), derived from the International Geomagnetic Refer... National Atlas of the United States.