The catalogue of a commemorative exhibit by the Amon Carter Museum, Fort Worth, Texas, to celebrate the 100th anniversary of the driving of the golden (or iron) spike which occurred at Promontory, Utah, May 10, 1869, when the Atlantic and Pacific coasts of the U.S. were united by iron rail. The volume includes 103 black-&white photographs of important sites and people connected with the transcontinental rail line, from the early days -- including the monument on the site where the golden spike was driven -- up to the 1960s. Each photograph has a concise description of its history and importance for the railroad.