Central Pacific Railroad #60 – or Jupiter – was one of two trains that met in Promontory Summit, Utah, to mark the completion of America's First Transcontinental Railroad.  Jupiter represented the western portion of the track.

The Central Pacific Railroad was approved by Congress in 1862, and became a project managed and funded by Leland Stanford, Collis Huntington, Charles Crocker, and Mark Hopkins.  These California businessmen became known as the "Big Four" or "The Associates."  Construction began on the Central Pacific Railroad in 1863.  It started in Sacramento, California, and finished in Promontory, Utah, on May 10, 1869.  Around 80 percent of crewmen who worked on the Central Pacific Railroad were Chinese emigrants.

Leland Stanford took a train pulled by the Antelope to the ceremony celebrating the completion of the Transcontinental Railroad.  A regularly scheduled train, Jupiter, traveled ahead of them.  Loggers near the railroad thought Jupiter was the only train coming, and sent a huge log rolling down the hill that it had just climbed.  Antelope was severely damaged by the log, and Stanford was forced to take Jupiter to Utah instead.

This single unexpected event changed history.  Today, the story of Antelope has all but faded away, while Jupiter is a legend we will never forget.