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Transportation
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Alabama
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Colorado
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1972
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1. Federal Lands of the United States, 2006
1972. National Atlas of the United States. This polygon shapefile contains federally owned or administered lands of the United States, Puerto Rico, and the U.S. Virgin Islands. Only areas of... National Atlas of the United States.
2. Major Roads of the United States, 1972-1999
1972. Geological Survey (U.S.). This line shapefile portrays the major roads in the United States, Puerto Rico, and the U.S. Virgin Islands. The file was produced by joining the i... Geological Survey (U.S.).