Now wholesaler Popcorn Posters is offering reproductions of what appear to be the full set of Master Mystery posters. I've rearranged the images from their "Magic" catalog to give us a look at the entire collection in the order each episode was released. The only poster missing is Episode 15. Could it be there was never a poster made for this final chapter? In its place I've inserted a projector slide advert. Enjoy.
Thanks to Joe Notaro of Harry Houdini Circumstantial Evidence for this find.