A black and white image of Deputy Marshall H. J. Williamson and W.M. Cook standing in front of an information tent in Williamsville (known to the residents as Ragtown), a makeshift community created near Black Canyon as construction began on the Hoover Dam.

A black and white image of a hill adjacent to Boulder City being leveled to make room for a reservoir.

An undated black and white image of snow sheds covering Central Pacific Railroad tracks in the Sierra Nevada Mountains.

A black and white image of a man with a drink sitting on a horse at a Union Pacific Old Timer's Club No. 23 gathering at the Fremont Hotel during Helldorado Days. This photo was taken from a time capsule left in the cornerstone of the Union Pacific Railroad Station in Las Vegas. The capsule was placed there in 1940 and retrieved when the building was demolished around 1970.

A black and white image of Union Pacific Depot Park in downtown Las Vegas. The area was bustling with cars and people.

Dr. Royce Martin's Hospital on North Second Street, which he acquired in 1920. The hospital had eight rooms on the second story, including the operating room.

A black and white image of the Hotel Nevada downtown Las Vegas, bustling with people and cars.