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Coal map of Illinois and Indiana
Geologic map of Kentucky : showing oil and gas pools and pipelines and the eastern and western coalfields
Map of Alaska
Map of a portion of British Columbia showing the coalfields of Comox, Nanaimo & Cowitchin on Vancouver and adjacent islands and the distribution of the cretaceous coal bearing rocks : also the tertiary rocks of Sooke & Burrard Inlet, to illustrate the report of Mr. James Richardson
Map of the coal fields of Pennsylvania
Map of the state of Colorado showing the coal and metalliferous areas
Map of the state of Montana
Map of the state of North Dakota
Map of the state of South Dakota
State of Colorado
State of Idaho
State of Oregon
State of Washington
State of Wyoming
Territory of New Mexico
The gold and coal fields of Alaska : together with the principal steamer routes and trails