Black Hawk, "The City of Mills," is one of Colorado's oldest cities. It is one of a number of towns that grew up in "Gregory's Gulch," the narrow ravine where Georgia prospector John H. Gregory first discovered lode gold in the western part of Kansas Territory in 1859. Within months, thousands of would-be miners poured into the gulch, hoping for more big strikes like Gregory's. A few found bonanzas, many found paying claims, but the great majority moved elsewhere to try their luck.
Dodge City [Kans.] Peace Commissioners. L to R: Chas. Bassett, W. H. Harris, Wyatt Earp, Luke Short, L. McLean, Bat Masterson, Neal Brown. By Camillus S. Fly, ca. 1890. U.S. National Archives, 111-SC-94129