From the Elizabeth Harrington Photograph Collection (PH-00291). Inscription with image reads: "Driving the silver spike. Dr. Ray Lyman Wilbur, Secretary of the Interior, drives the last spike into tracks of railroads spur to the damsite. To the right of Dr. Wilbur is Senator Key Pittman. Nest to Pittman is Nevada Governor Fred Balzar. Second back from Senator Pittman is Las Vegas Mayor Fred Hesse. To the left of Dr. Wilbur is Carl R. Coray, Union Pacific Railroad president." - E(lizabeth) Harrington.