1942 Carl Lange Stereoscopic Opthomological "Coordinator" Slides - Set 3 lock shaped key holder with the final marble ending

with the final marble ending up in the centre hole

Theochrom and printed in Germany

nineteen by my count

" and that the other two are "fellows" they met on the Mack train

It would be good hung on the wall by one of the links

1942 Carl Lange Stereoscopic Opthomological "Coordinator" Slides - Set 3 lock shaped key holder with the final marble endingI was pretty excited to find a box full of these handmade slides at the flea market this weekend a box in which many were rolled up in newspaper from 1945, seemingly untouched since then! What I've learned is that Carl W. Lange Sr. and Jr. , who copyrighted this set of stereoscopic slides in 1942, were father and son opthomologists with a practice near St. Louis and a particular commitment to curing myopia (nearsightedness.) They wrote and travelled