Factual error: About 3/4 of the way through, a scene shows two trains facing each other, and a band plays "Stars and Stripes Forever" a famous march composed by John Phillip Sousa. However, this march was not composed until 1896, 27 years after the scene supposedly takes place (1869).
Factual error: Tonto explains to a boy how he showed two men the location of rich silver deposits in exchange for a cheap watch from Sears Roebuck. The scene is to have taken place when Tonto was child, which would be several years prior to 1869, when Tonto was an adult. However, Sears Robuck was not founded until 1886, many years after the story could have taken place.
Factual error: The film is set in 1869. A band member is playing a Sousaphone, named after John Phillips Sousa who was only born in 1864.
Factual error: The model railroad is HO scale, which wasn't created until around 1922.