Some suppliers of materials neeeded to fabricate this stereo projection system: 2x2 in. stereo mounts: GEPE#6102 slide binders, from photo dealers. Glasses (polarizing or anaglyphic (red/blue): 3-D Video Corp., 4605 Lankershim Blvd., N. Hollywood, CA 91602; Marks Polarized Corp., 153-16 Tenth Ave., Whitestone, NY 11357. Polaroid filters from professional photo dealers' lighting departments; or Edmund Scientific, 101 E. Glouchester Park, Barrington, NJ 08007. Front surface mirrors from Edmound Scientific. Lenticular screens (silver metallic surface): Protolite Corp. (custom made and material screens), 985 Timothy Drive, San Jose, CA 95133; video screens work well. Magnetic paper clips from office suppliers.