The fifth of nine movies made together by Warner Brothers' romantic couple Olivia de Havilland and Errol Flynn.
Warner Bros. chartered a special 16-car train that transported at least 36 reporters to Dodge City, KS, for the film's premiere. Along the way an unscheduled stop was made in Pasadena so that Olivia de Havilland could leave the train and report for work on Gone with the Wind (1939). The studio also sent a Technicolor crew to film the premiere, which was attended by Franklin D. Roosevelt Jr. and over 70,000 visitors that had come to the city to celebrate the premiere.
Errol Flynn's first western. He always felt miscast in the genre due to his English accent. Although Flynn was born in Tasmania he used an English accent in films.
Country rock band Pure Prairie League, which had a mid-'70s hit called "Amie" and later employed future country star Vince Gill as lead singer for hits like "Let Me Love You Tonight" and "I'm Almost Ready," took their name from a temperance union portrayed in this film.
Olivia de Havilland regarded the project as a career letdown. She was tired of the string of ingenue parts Warners steadily provided, and her preference for the saloon singer role that went to Ann Sheridan went unheeded. "It was a period in which she was given to constant fits of crying and long days spent at home in bed," declared Tony Thomas in "The Films of Olivia de Havilland" (Citadel Press). "She was bored with her work and while making 'Dodge City' she claims that she even had trouble remembering her lines."
The man Errol Flynn throws through the window of the barbershop was none other than his pal and long-time drinking companion, stuntman Buster Wiles.
The music played in the saloon by the piano player was later recycled into a Warner Bros. Looney Tunes Daffy Duck cartoon entitled Drip-Along Daffy (1951), a western spoof.
Olivia de Havilland's drunken, boisterous brother causes a stampede early in the movie, and film fans may not recognize the handsome young actor (William Lundigan) who plays him, because his character is so different from the role Lundigan made famous on television in 1960. He starred as Col. Edward McCauley in the television series Men Into Space (1959).
Silent film comedienne Flora Finch appears unbilled introducing the President of Prairie League (Cora Witherspoon) to Algernon 'Rusty' Hart (Alan Hale)
The 'Chisholm Trail' scenes in the film took place on location near Modesto, California.
The cast includes one Oscar winner (Olivia de Havilland) and one Oscar nominee (Henry Travers).
The locomotive, first seen at the beginning of the film, was Sierra Railroad's No. 18, a 1906 Baldwin 2-8-0. This locomotive was subsequently sold to a collector. The tender was sold to another railroad in 1952 and scrapped in 1955.
Warner Brothers made use of footage filmed here for the western 'Return of the Frontiersman'  including the shot of Errol Flynn pinning the sheriff's badge on his belt.
This film's earliest documented telecasts took place in Tucson Sunday 19 August 1956 on KDWI (Channel 9), in Salt Lake City Wednesday 17 October 1956 on KUTV (Channel 2), in San Diego CA Sunday 28 October 1956 on KFSD (Channel 10), in Phoenix Tuesday 20 November 1956 on KPHO (Channel 5),and in Los Angeles Sunday 2 December 1956 on KTLA (Channel 5). At this time, color broadcasting was in its infancy, limited to only a small number of high rated programs, primarily on NBC and NBC affiliated stations, so these film showings were still in B&W. Most viewers were not offered the opportunity to see these films in their original Technicolor until several years later. In Honolulu it enjoyed its first colorcast Thursday 19 September 1957 on KHVH (Channel 13); in Philadelphia it was first aired in B&W Wednesday 9 October 1957 on WFIL (Channel 6), and, after repeated B&W showings, finally offered a colorcast presentation Wednesday 6 January 1960.
In the scene where Flynn confronts the villains at the cattle auction, his Australian accent is quite apparent when he says "G'day" as he walks away.
At the end of the movie (which is set in 1872) Colonel Dodge tells Wade that Virginia City has 4,000 inhabitants. However, according to the 1870 census, Virginia City had 7,048; the 1880 census indicates the city had a population of 10,917.