Unk tells a story to his two nephews about the time when he and Joe Soxie visited the stone-covered grave and haunted cabn of Mad Dick where they (and they dog) were able to view the prehistoric past through a queer looking instrument and accidentally allow T. Rex onto Slumber Mountain. Of course, it may have all been a dream, which would normally disqualify the story from our list, but not when it’s 1918 stop-acton dinosaur animation!
Far, far away, at the foot of a cliff, a Thunder Lizard—which must have been at least one hundred feet long—appeared out of the mists of forty million years.
Willis O’Brien, Master Traveller
Without The Ghosts of Slumber Mountain, would Marty McFly ever have been born? Probably, but Willis O’Brien still deserves a Master Traveller Citation for the first time travel film.