This rare set of maps of the coal fields are the companions to the oil maps presented in Sweet's elusive report on the oil regions of Pennsylvania and West Virginia. Each map is folding, printed in blue ink with light brown overprinting to indicate coal reserves. Each is highly detailed showing coal deposits and the transportation network of roads, railroads and canals. The lot includes the following:

A. Map of Pennsylvania Shewing Routes by Railroad & Water from the Coal Fields (30.3 x 20.9"). Includes part of New York, New Jersey and Maryland. Extensive portion of western Pennsylvania indicates coal reserves.

B. Map of Middle Coal Basin Compiled from the Latest Reliable Sources (28.6 x 15.1"). Extremely detailed on a scale of approximately 1.75 miles per inch, this map is centered on Mount Carmel showing much of the region covered with coal. The larger towns located are Bloomburg, Northcumberland, and Pottsville.

C. Map of Southern or Schuylkil Coal Basin (28.5 x 16.9"). The detailed map is centered on Pottsville and names North Lebanon, Sunbury and Hamburg.

D. Map of the Wyoming & Lackawanna Coal Basin (15.9 x 16.6"). The map is roughly centered on Pittston and names Wilkesbarre, Tuckhannock, Providence and Carbondale.

E. Cumberland Coal Region Shewing the Relative Positions of the Mines (22.0 x 8.3"). This coal mining map shows Maryland and northern Virginia. The map has two panels: the first shows the Piedmont area at the confluence of the North Branch of the Potomac River and Georges Creek. The right panel depicts the various coal holdings along Georges Creek near Dans Mountain. Both name property owners, roads, topography, and railroads.

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Condition: B+

Issued folding with an occasional spot of foxing and light toning along a few folds and the edges of the sheets. The map of the Schuylkill coal basin has a red ink smudge in the image.