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 27 lithographic plates.

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Condition: A

Contents are incredibly clean and crisp with just a hint of pleasant light toning. The front free-endpaper has a vertical crease, and there are old library stamps on the inside covers and title page along with a withdrawn stamp in German (no plates have the stamp). Light shelf wear to the covers.