(COLORADO -- GOLD MINING.) George S. Clason.

(COLORADO -- GOLD MINING.) George S. Clason. Topographical Map Gilpin County Colo. Mineral Belt Gold Production $125,000,000.00. Chromolithographed folding plan focused on the gold mining towns of Central City and Blackhawk (once dubbed the "Richest Square Mile on Earth", now old-west-themed gambling resorts). 25x19 inches overall, folding into original printed envelope; faint show-through of verso-printed text (as usual), otherwise virtually faultless.-Denver: Denver Lith. Co., circa 1906