This is an excellent series of detailed topographical and geological maps of Aspen and its environs and is a much sought after work on this now elite area of Colorado. The maps and geological cross-sections detail the topography and geology of Aspen, Tourtelotte, Hunter Park, Lenado, Aspen Mountain, and Smuggler Mountain. Includes the Aspen Special Sheet that details the town, and nearby mines. Elephant folio. Hardbound in brown cloth. Comprised of a Title Page, Table of Contents, a Legend detailing the topography and geology of the Aspen District, and 24 lithographic maps.

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Condition: A

Covers show some shelf wear and bumping at the edges and corners. Spine has some areas of loss, but otherwise good. All the sheets have very light toning along the edges, a couple with minor soiling on verso and one with a separation in the lower margin not affecting image.