View of (probably) a Public Works Administration hydraulic gold placer mining class, in Denver, Colorado; shows crowds of people panning in the South Platte River, houses, and cars.
Denver (Colo.)--1930-1940.; South Platte River (Colo. and Neb.)--1930-1940.; Automobiles--Colorado--Denver--1930-1940.; Gold mining--Colorado--Denver--1930-1940.; Hydraulic mining--Colorado--Denver--1930-1940.; Mining...
[between 1940 and 1943?]
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