When the dog spooks the team that Spud is driving, there are fences and buildings in the background. However the close shots of Spud show open fields behind him.
When Ted Hayden first introduces himself to Gentry, the shadow on his shirt changes depending upon the camera angle.
When Gentry introduces 'Gat Ganns' to the boys, his arms are by his side and his hands are empty. The next shot shows him with arms folded and holding a cigarette. When he instructs the boys to show Gat and Rusty to the sleeping quarters the cigarette has disappeared.
A battery powered torch is used in the film yet the first torch was by an English inventor David Misell obtained U.S. Patent No. 617,592 in the year 1899.
During a fight between Ted Hayden and Butch, Spuds shouts, "Come on, Ted!" Actually, Ted has been introduced to him and all others at the gangsters' hide-out as Gat Ganns. His real identity is in fact revealed later.