Postcard of a nine story concrete hotel with green accents and a full parking lot. On the back, the hotel is described as such, "The Riviera Hotel, Las Vegas, Nevada This plush nine-story hotel has established a new high in the Last Vegas sky - the ultimate in luxury, elegance, and pleasure. The glittering Clover Room nightly offers for your entertainment the greatest personalities of show business."

Postcard of scenes of Las Vegas in a folded postcard.

Postcard of the "Downstream Face Of Boulder Dam". Mountains and canyons at top of photo, dam at center, downstream flow of water at bottom. Black text on back of postcard reads: "For Correspondence Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of "Lake Mead From Observation Point Boulder Dam" as written in white text at bottom right corner of postcard. Two automobiles are parked near the rock ledge of the point. Two people can be seen leaning near the ledge. Large body of water with mountains in background. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of an "Aerial View Of Boulder Dam" showing the semi-circular dam with cars on highway at top. Two cylinder shaped extensions radiating from either side of main portion of dam. Smaller roadways cross-cross in top right. Cement parking area on left. The canyon extends vertically across the center of the postcard. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the "Boat Landing and Bathing Beach Boulder Dam". The image shows a sandy beach area from bottom left horizontally to center right with eight automobiles parked on right side of photo. Several wooden pavilions and buildings line the water edge. Boats are parked next to buildings in center. Several boats out in the water. Mountains in background. Black text on back of postcard reads: "For Correspondence Post Card Address [in black line rectangle] Postage 1 [cent]". A decorative black line with JCB (?) at bottom, separates message and address.

Postcard image of the "Power Line Leading From Boulder Dam To Los Angeles" as written in white text near bottom right corner of postcard. The image shows a highway with car approaching (right). The large metal structures that support the power line can be seen from right center to left center with desert land in foreground and mountains in left background. Black text on back of postcard reads: "For Correspondence Post Card Address [in black line rectangle] Postage 1 [cent]". A decorative black line with JCB (?) at bottom, separates message and address.

Postcard image of the "Site of Boulder Dam. View 1931" as written in black text at bottom center. The image shows tall rock canyon to left right and center background with dam waters in center. Black text on back of postcard reads: "For Correspondence Post Card Address [in black line rectangle] Postage 1 [cent]". A decorative black line with JCB (?) at bottom, separates message and address.

Postcard image the "Upstream Face Of Boulder Dam" as written in white text near bottom right of postcard. Observation Point is in the foreground. The dam is in the center of the photograph. There is a boat cruising through the water near center right (wake of water seen behind boat). Canyon mountains in background. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the "Downstream Face of Boulder Dam At Night" as written in bottom right corner of the postcard. Darkness around the spotlighted area of the dam (center of photo). Black text on back of postcard reads: "For Correspondence Post Card Address [in black line rectangle] Postage 1 [cent]". A decorative black line with JCB (?) at bottom, separates message and address.

Postcard image of the "Terrazo Floor In Boulder Dam Powerhouse" as written in white text in top right corner. The floor has a unique patterned circle near center with a man leaning to the outside of the circle on center right of photo. Metal rail extends from left edge to near center of photo. Metal vertical ladder on other side of rail. Cement wall in background. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of "Lowering Box Car Of Power House Machinery Via Government 150-T On Cableway, Boulder Dam". Cable at top of photo with wires supporting a platform carrying machinery. Dam wall in background. Canyon mountains in distance. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the "Visitors Gallery Within Boulder Dam. Leading From Elevator Shaft to Power House" as written in white text at bottom center of postcard. Several people can be seen standing at the end of the tunnel-like gallery. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the "Aerial View of Boulder Dam And Lower Basin Of Lake Mead" as written in white text in bottom left corner of postcard. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the "Nevada Wing Of Boulder Dam PowerHouse" as written in white text in bottom right corner of postcard. The interior of the powerhouse focuses on the five turbines in center of photograph. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of "Visitors Waiting For Elevator To Boulder Dam Powerhouse" as written in white text in bottom right corner of postcard. A line of people are inside of a covered area that leads to a tall cement structure on right of photo. Street on left with cars parked on both sides of the road. A round shaped cement building is in the right background. Canyon mountains in distance extend from left to center of postcard. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

Postcard image of the city of "Boulder City, Nevada" as written in the bottom left corner of the postcard. Street (with car parked on side of street) in foreground intersects with another street on right. Mountains in background. Black text on back of postcard reads: "Message Post Card Address [in black line rectangle] Postage 1 [cent]".

A photograph postcard showing the Union Pacific (SP) 6002, on a freight extra, Pioche branch of the UP, near Caliente, NV.

A photograph postcard showing Union Pacific (UP) 3981, 4-6-6-4, on passenger train No. 38, "Pony Express", approaching Caliente, NV, 15 cars, 40 mph.

A photograph postcard showing Union Pacific (UP) 3981, 4-6-6-4, on passenger train No. 38, "Pony Express", leaving Caliente, NV, 15 cars, 30 mph.

A photograph postcard showing the Virginia & Truckee (VT) 26, 4-6-0, on northbound mixed train above Carson City, NV. (Note abandoned tunnel)

A photograph postcard showing the Virginia & Truckee (VT)26, 4-6-0, Reno, NV.