Factual error: On the night of 19 October 1933 the railroad workers begin betting whether A-One will make it to Portland on the 19. A quick closeup of the money changing hands reveals the $1's to have the Great Seal reverse (introduced in 1935) plus the motto IN GOD WE TRUST (introduced in 1957). Also, the green-seal Federal Reserve Notes and the red-seal United States $2 notes are of the types first introduced in 1934.
Factual error: When Hack's train is rushing to get onto the siding before the mail train hits his, there is no-one to open or close the switch, and the switch is not connected to an interlocking tower. (00:56:00)
