“The Ghost of Slumber Mountain” (1918) was written and directed by special effects wizard Willis O’Brien, who did “King Kong” years later. A 19 minute version still exists, though the two reel, 40 minute version no longer does. A common reason the film was cut down is that two-reel movies were less popular among theater owners than one reel movies, and also, there was a large, excised subplot with homosexual subtext.