An image showing the exterior of the Beacon Tavern and Hotel and Richfield service station in Baker.

An image of various businesses (restaurants, motels, service stations, pharmacies) on a main street through downtown Barstow. A water tank is visible in the distance on the left.

An image showing an aerial view of Needles, California

An image showing the exterior of the El Rancho Motel in Needles. A swimming pool is visible in front of the motel. Automobiles are parked outside of the rooms.

An image of automobiles parked outside of businesses and restaurants on Nevada Boulevard in Boulder City, looking northeast towards the Bureau of Reclamation Administration Building. Hand-printed text on image reads: "Nevada Boulevard, Boulder City, Nevada."

An image of the visitors' gallery inside the Hoover Dam powerhouse packed full of people. Hand-printed text at bottom of image reads: "Visitors gallery, Power Plant, Boulder Dam." Note: Boulder Dam was officially renamed Hoover Dam in 1947.

An image of a mining building and a boat on Lake Mead. Gold ore claims were made near the northern shores of Lake Mead in the late 1930s, after the completion of Hoover Dam. Shipments of ore were towed down Lake Mead by barge for railroad transport. Text on bottom of image reads: "First load of gold ore to be transported on Boulder Lake by barge." Note: Boulder Dam was officially renamed Hoover Dam in 1947.