View of the remains of the Humphrey Concentrator near North Clear Creek, Black Hawk, Gilpin County, Colorado.
Gravity concentrators--Colorado--Blackhawk--1940-1960.; North Clear Creek (Gilpin County-Jefferson County, Colo.)--1940-1960.; Blackhawk (Colo.)--1940-1960.; Mining--Colorado--Blackhawk--1940-1960.; Ruins--Colorado--Blackhawk--1940-1960.
Three-quarter view from the rear of Cherrelyn horse car with the horse on the back platform, Cherrelyn, (district incorporated into Englewood) Arapahoe County, Colorado; includes two men wearing straw hats standing next to the car, a woman with...
Cherrelyn (Colo.)--1900-1910.; Horse railroads--Colorado--Cherrelyn--1900-1910.; Street railroads--Colorado--Cherrelyn--1900-1910.
Yearbook for Denver Manual Training High School 1910.
Manual High School (Denver, Colo.)--Students--Yearbooks.; Denver Public Schools--Students--Yearbooks.; School yearbooks--Colorado--Denver.; High schools--Colorado--Denver--Periodicals.
Denver Public Schools--Students--Yearbooks.; North High School (Denver, Colo.)--Students--Yearbooks.; School yearbooks--Colorado--Denver.; High schools--Colorado--Denver--Periodicals.