Just to nit-pick first, "Stereo Opticon" is not a preferred term. I think you mean "stereoscope." As a "stereopticon" was a dual or triple magic lantern, a "stereopticon viewer" would probably denote a person inspecting such a beast! Anyway, I have an old issue of "Stereo World" in my office with an ad for reproduction stereoscopes from T.M. Visual Industries, Inc., in New York, phone 800-223-6694. I don't know anything about them, but you might try calling. Tonight I'll check my more recent issues of the magazine to see if there's a more current listing. --David Haberstich