Bryan, Out of curiosity, how thick would you say your glass slide is? The ones I have from different years/manufacturers all seem to be exactly the same, about 1/8" thick, or maybe a hair under that. I woulde assume such a standard thickness would be to fit the projectors they were made for. Mine are all the exact same 4" X 3-1/4" dimensions that you said your slide is as well. So if the thickness is similar that would seem to indicate someone was trying to create some kind of magic lantern slide from that 1896 image, even if only a homemade one from a kit.
And where did you find that, as Rhotchkiss was asking?
|