resolutions from lowest to highest:
3. Alfred Edward Mathews (1831-1874). Central City; Looking Up Spring Gulch. Tinted lithograph, Plate 9. Mathews, A.E. Pencil Sketches of Colorado. New York: The Author, 1866. St. Louis Mercantile Library at the University of Missouri - St. Louis.
"In the view looking up Spring Gulch, Missouri City lies at the head of the gulch, and on the right, in the distance, is Quartz Hill. Just beyond the city, and at the foot of Quartz Hill, are the works of the Montana Gold Mining Company; and further up the gulch the works of the Pacific National Company are seen. In Nevada Gulch, which branches off to the right from Spring Gulch, are the Central Gold Mining Company's Works; and immediately this side, the roof of the Columbia Gold Mining Company's works are seen. The view was taken from the hill-side east of the town, and in the rear of the Theatre."