Curiosidades

The kitchen staff for the film was made up largely of Chinese cooks. Some of them had been workers on the transcontinental railroad in 1869, the same construction project that forms the basis of this film.

According to R.L. Hough, about 35 of the many extras were retired, elderly Chinese-Americans who had previously had decades-long careers working for the railroad. Hough described them as "wonderful" to work with.

This film was the opening night film for the 15th San Francisco Silent Film Festival in 2010.

A notation on a title card states that in the final scenes of the meeting of the west and east railways, director John Ford used the actual engines that did meet on that day, the Jupiter and Locomotive 116. This claim was, in fact, not true. Not only was one of the locomotives actually number 119 (not 116), but both engines had already been scrapped by the time of the film - Jupiter in 1909, and No. 119 in 1903.

During the filming of a climactic gun battle, which took several days to film, the cast and crew awoke to find that an unexpected snowfall had blanketed the set. The crew, and most of the cast, set to work clearing the large set of the fresh snow, and amazingly were able to do so in about an hour.