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  • All fields: Tunnels--Colorado--Jefferson County--1930-1940.
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    • Road tunnel construction in Red Rocks Park

    • Laborers pose near ore cars and on stone rubble, in the entrance to a road tunnel under construction, in Red Rocks Park, a Denver Mountain Park near Morrison in Jefferson County, Colorado. Dual railroad tracks enter the tunnel. Shows a sandstone...
    • Denver Mountain Parks--1930-1940.; Jefferson County (Colo.)--1930-1940.; Red Rocks Park (Colo.)--1930-1940.; Construction workers--Colorado--Jefferson County--1930-1940.; Construction--Colorado--Jefferson County--1930-1940.;...
    • [between 1937 and 1940?]

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