Right to left: Frank Duncan, Jake Holcomb, John Baldwin, Laff Holcomb, and Billy Dole standing outside of the Colorado Club.

Bob Hall uses a series of ropes and pulleys to cross over water at the Grand Canyon.

Rock formations inside the state park of Red Rock Canyon, California.

Black and white image of six women posing for a photograph in front of a building.

Machines and engines at the Death Valley Mill.

Man with a hat sits on a beach next to water. Written atop postcard with an arrow pointing to mountain reads "Boulder Can[y]on Dam Site." Underneath the man reads: "Reservoir Site Colorado River 40 Miles East of Las Vegas, Nev. Looking down stream."

Eight men stand, sit, and kneel next to a large canyon. They look off camera to the right and are all wearing suits. The reasoning behind their wearabouts and formal attire is unknown. Frank Crowe stands to the far left.