Denver and Rio Grande Western Railroad construction in Ruby Canyon, Colorado or Utah, consists of men working by a steam shovel and dump truck, with the Colorado River in the background.
Denver and Rio Grande Western Railroad Company--1920-1930.; Colorado River (Colo.-Mexico)--1920-1930.; Ruby Canyon (Colo. and Utah)--1920-1930.; Dump trucks--1920-1930.; Railroad construction & maintenance--1920-1930.; Railroad construction...
[between 1925 and 1930?]
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