An artist's rendering of Boulder Canyon. Text on front of postcard: "Hoover Dam site, Boulder Canyon, looking downstream." Text on back of postcard: "Work is rapidly progressing on the new Hoover Dam, thirty miles southeast of Las Vegas. This tremendous project will cost the government in excess of $165, 000, 000.00 and will take about eight years to complete. The dam site is where the river disappears in the center of the picture. Arizona is on the left, Nevada on the right. Within a decade, the parched desert lands to the north will be washed by the waters of the largest man-made lake in the Western Hemisphere, impounded by the Hoover Dam, the greatest structure since Cheops."
Harley A. Harmon was born in 1882 in Wier City, Kansas. His father, Elmer Harmon, was an attorney who moved the family to Los Angeles, California when Harmon was nine years old. In 1903, Harley A. Harmon unsuccessfully ran for Los Angeles City Clerk. In 1905, Harley A. Harmon joined the Union Pacific Railroad as an engineer and drove one of the first construction trains to Las Vegas, Nevada, where Harley A. Harmon was stationed in 1908.