127 slides had a 38x38mm film area in a 2x2 inch mount. They were called Super Slides and could be shown with a regular 35mm slide projector. Although there was never any 127 Kodachrome film, you could still have Kodachrome Super Slides. Think about it. As Roger Hicks said above, 120 Kodachrome was available for a short time. I used to shoot Ektachrome Super Slides on 127 film with a Baby Rollei. However, before the Rollei, I would shoot sixteen 1 5/8 X 2 1/4 transparencies on 620 Ektachrome in my Kodak Tourist II with a Duo adapter kit. Simply cut a little off the top and bottom of each transparency, mount them, and guess what you get. Never did this with 120 Kodachrome, but anybody could have easily produced Kodachrome Super Slides this way. Did anybody else ever make Super Slides this way?