View of construction at the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado.; shows tracks, sheds, pipes, pipe sections, tailings, rocky crags, cirrus and cumulus clouds.
Date
[between 1940 and 1950?]
Notes
Accession number: 88.442.125; History Colorado.; Title penciled on negative sleeve with: "2072" and "safety film."; R7200055722
