Postcard with an illustration of Colorado River looking upstream between mountains. The typed caption reads: "Colorado River, looking upstream, Boulder Damsite in 1931."
Illustration the of a train and people standing near it. Caption reads: "Union Pacific Miracle Train passing through a 30 foot intake pipe, Boulder Dam project."
Black and white image of a motor boat in Lake Mead (Boulder Lake). As a side note, this photo was used as a publicity shot and the fish were imported from Southern California.