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Paper Map
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Coal
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United States
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Mixed
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1. Coal investigations
Geological Survey (U.S.). U.S. Geological Survey,.
2. Coal movement by highways, 1974
Geological Survey (U.S.). U.S. Geological Survey,.
3. Coal movement by railroads, 1974
Geological Survey (U.S.). The U.S. Geological Survey,.
4. Coal movement by water, 1974
Geological Survey (U.S.). U.S. Geological Survey,.
5. Keystone's map of the coal fields of the United States.
McGraw-Hill,.
6. Map showing coal fields of the United States.
Campbell, Marius R. (Marius Robinson), 1858-1940. U.S. Geological Survey,.
7. Total coal movement, 1974
Geological Survey (U.S.). U.S. Geological Survey,.