- Because blacklisted people were among those who made the movie, the production was fraught with outside interference. The entire cast and crew were met by a citizens' committee in Central, New Mexico, where they had planned to film, and were ordered to leave town. The following day they moved the production to Silver City, NM, and were warned to "get out of town... or go out in black boxes."
- This film was selected to the National Film Registry, Library of Congress, in 1992.
- Because the producers feared both sabotage and destruction of the film, the exposed footage had to be developed in secret, and at night, by a sympathetic lab technician, with the film delivered in unmarked canisters.
- This movie was the only blacklisted film ever in American film history. It was blacklisted during the 1950s during the height of the Cold War scare.
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