Scope and Contents From the Sub-Series: Images document equipment, crews, construction camps, preparing rail bed, laying track, locomotives, steam shovels, dirt excavation, building of bridges and tunnels, etc. This subseries includes images taken near Missoula (circa 1907-1912) donated by Jack McDougall who worked as a contractor for the railroad. These photos were removed from a scrapbook and donated in 1962. There are images of track laying, tunnel and bridge building, and construction equipment, camps and crews. Photographs of...