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Western Wednesday Presents Horizons West "Into The Unknown". Westward to the Rocky Mountains. A meeting with a grizzly and a rescue by the expedition's dog. A false river leads to the north. Harry Bartell, John Anderson, Karl Swenson, Don Diamond, Steven Bell, Dal McKinnon, Sebastian Cabot, Carl A. Tundberg, William Tundberg (writer), Rye Billsbury (announcer, billed as Michael Rye), William Lally (director), Gene Twombley (sound patterns).