Earth vs. the Flying Saucers

I just watched Earth vs. the Flying Saucers (1956) directed by Fred F. Sears. The storyline was suggested by the bestselling 1953 non-fiction book Flying Saucers from Outer Space by Maj. Donald Keyhoe. The stop-motion animation special effects were created by Ray Harryhausen. The film was released as a double feature with The Werewolf.

It stars Hugh Marlowe and Joan Taylor (who later played Milly on The Rifleman).