An illustrated postcard of the Virginia City Consolidated California and Virginia Shaft.

Postcard of the Martin Hotel. The sign reads: "Martin Hotel Cocktails and Family Dining." Site Name: Martin Hotel (Winnemucca, Nev.)

Illustration on postcard of men overlooking the reservoir site and automobiles including a Union Pacific truck on the road. "Overlooking Resevoir Site" is typed on the top left hand corner.

Illustration of Arrowhead Trail on a postcard with the caption, "Crossing the desert, Arrowhead Trail." A car is seen driving through a blooming desert.

Postcard with an illustration of a dry lake in front of mountains. The typed caption reads: "A dry lake near Boulder Dam."

Postcard with an illustration of Colorado River looking upstream between mountains. The typed caption reads: "Colorado River, looking upstream, Boulder Damsite in 1931."

Illustration on a postcard of giant tunnels creating diversions for the Colorado River during the construction of Hoover Dam. The caption reads: "Diverting the Colorado River through giant tunnels."