Workers of the Union Pacific and Central Pacific Railroads are shown in this historic photograph as they joined in a champagne hoisting ceremony after the Golden Spike was driven at Promontory, Utah, on May 10, 1869. This event marked the completion of the first transcontinental rail line in the United States. The locomotive at the left is the 'Jupiter' of the Central Pacific (now the Southern Pacific). The other is No. 119 of the Union Pacific.
After the ceremony the two engines were unhooked from their trains and, with cheering celebrants all over them, advanced to touch pilots. The engines then backed up to their trains, hooked on and took turns crossing the rails which had been joined. One man there said the crowd 'was yelling fit to bust.'