Factual error: Two grave markers at the end, approximately one hour and 27 minutes into the film, have the date of November 7, 1889, on them. The script made it clear that the climactic gunfight between Glenn Ford and Broderick Crawford came on a Sunday. Ford was called out of church services, for example. According to The World Almanac and Book of Facts, November 7, 1889, was a Thursday, not a Sunday.
The Fastest Gun Alive (1956)
1 mistake
Directed by: Russell Rouse
Starring: Glenn Ford, Russ Tamblyn, Broderick Crawford, Jeanne Crain
Genres: Western
Sheriff Bill Toledo: This fella George Kelby musta been pretty fast.
Harvey Maxwell: He was the fastest man alive.
Sheriff Bill Toledo: Then how come he's dead?
Harvey Maxwell: He wanted it that way.