Gibson Dam Under Construction

This undated Greenfields Irrigation District photo shows Gibson Dam, near Augusta, Montana, under construction. The photo shows the railroad line that delivered construction equipment and materials to the construction site (lower left-hand). At the dam face is a trestle where the trains crossed the Sun River, and on the right-hand side is the track used by trains leaving the construction site. Near the center of the photo, you can see a locomotive puffing smoke.