Censorship problems arose from early versions of the script, which included phases of Catherine's actual childbirth and references to labor pains, gas, her groaning and hemorrhaging. After these were removed, the MPPDA approved the script, and even issued a certificate for re-release in 1938 when the censorship rules were more strictly enforced. Still, the film was rejected in British Columbia and in Australia, where Hemingway's book was also banned.
To the modern discerning eye, the use of miniatures is apparent in some scenes. If one looks very closely at the first scene, ambulance trucks driving up a winding mountain road will be noted to be well crafted miniatures.
The failure of the original copyright holder to renew the film's copyright resulted in it falling into public domain, meaning that virtually anyone could duplicate and sell a VHS/DVD copy of the film. Therefore, many of the versions of this film available on the market are either severely (and usually badly) edited and/or of extremely poor quality, having been duped from second- or third-generation (or more) copies of the film.
The trivia item below may give away important plot points.
Cinema managers were offered the film with two endings, one happy and one sad. When Ernest Hemingway got wind of this tactic, he was furious so cinemas in the larger cities, where the mainly pro-Hemingway critics were based, were provided only with the downbeat ending, in accordance with the way the novel ended.