A black and white image of a train taken near the Six Companies yard north of Boulder City, heading south. Information from back of photo or photo sleeve states "First passenger train entering Boulder City," however, the train is going in the wrong direction.

A distant view of horses pulling wagons filled with supplies for the advance parties of S.P. (San Pedro), L.A. (Los Angeles) & S.L. (Salt Lake) railroad line builders in southern Nevada.

Widening a railroad tunnel between Las Vegas and Caliente. The plan was to double track the Union Pacific Railroad (U.P.R.R.), but the Great Depression occurred and work was never completed. Iowa civil engineer John Muceus is working on the project.

Transcribed from behind photograph, "Las Vegas & Tonopah no. 4 at Goldfield Engine House after explosion October 10, 1911."

A black and white image showing construction of a road in Boulder City.

The grayscale, panoramic view of the area where the construction site of Boulder City was. A train and railroad tracks can be seen in the distant, rocky background.

People outside of railroad passenger cars. Handwritten description given with photograph: "SP, LA & SL station [street side] with draftees WWI Las Vegas. Sequence of farewell scenes with views of cars. At least one car still lettered 'Salt Lake'."