 While visiting his friend Ray Harryhausen (qv) on the set,  Ray Bradbury (qv) was given a copy of the script and was asked if  he could possibly do some rewriting on it. After reading the script,  Bradbury remarked that the story seemed very similar to one he had  published in "The Saturday Evening Post" several years earlier. The  next day Bradbury received a telegram offering to buy the film  rights to the story.