1927. United States. Bureau of Public Roads. Base map from U.S. Geological Survey state map.; "Data corrected to Dec. 31, 1927." on sheets 79 x 56 centimeters Scale 1:760,320; 1 inch = 12 mile... The Bureau (Washington, D.C).
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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.
1912. Geological Survey (U.S.). Relief shown by contours and spot heights; Contour interval 100 feet. Datum is mean sea level.; Includes examples of "Conventional signs" used on t... Engraved and printed by the U.S. Geological Survey (Washington, D.C).
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.
2004. National Atlas of the United States. This point shapefile includes Holocene volcanoes, which are those thought to be active in the last 10,000 years, that are within an extended area o... National Atlas of the United States.
1898. Poole Brothers. Relief shown by shading and spot heights.; "Copyrighted, 1898, by Poole Bros., Chicago." 66 x 50 centimeters Scale approximately 1:166,000 General ... Northern Pacific Railway (St. Paul, Minn.?), 1898.