2001. Eastern Energy Resource Surveys Team (Geological Survey). This polygon shapefile shows the coal fields of Alaska and the conterminous United States. Most of the material for the conterminous United States ... National Atlas of the United States.
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McAlpine, R. L. and United States, Commission to the Five Civilized Tribes. compiled and drawn by R.L. McAlpine. Shows coal and asphalt segregation and township and range. s.n.].
McAlpine, R. L. and United States, Commission to the Five Civilized Tribes. compiled and drawn by R.L. McAlpine. Shows township and range. Colors indicate coal and asphalt segregation. s.n.].
McAlpine, R. L. and United States, Commission to the Five Civilized Tribes. compiled and drawn by R.L. McAlpine. Shows township and range. Colors indicate coal and asphalt segregation. s.n.].