Lot of seven 3.25x4" glass transparency slides for projection in movie houses to announce upcoming movie. Titles include: Tom Mix film "The Rider Of Death Valley," (1932); Gene Autry serial "The Phantom Empire," (1935); "The Devil Horse," (1932); Johnny Mack Brown western "Flaming Frontiers," (1938); "Overland With Kit Carson," (1939); "The Vanishing Rider," (1928); "The Return Of The Riddle Rider," (1927). Cardboard frames show some oxidation at staples. Glass slides remain bright and Exc.