The 1951 sci-fi film, "The Day the Earth Stood Still" highly influenced the early claims from UFO contactees. The arrival of a tall alien in a silvery uniform, here to warn Earth of the folly of its nuclear weapons development, is also regarded as one of the best of the genre for its time.
Here's plenty of inside information about the making of the film:
Here's plenty of inside information about the making of the film: