1942 Carl Lange Stereoscopic Opthomological "Coordinator" Slides - Set 2 black lacquer and dating to the late

and dating to the late 19th century or so

) It folds back up elegantly to form a rectangular box with square sides

so as to be useable right away as a frame

standing sturdy on its legs

is in this May Pole Dance

1942 Carl Lange Stereoscopic Opthomological "Coordinator" Slides - Set 2 black lacquer and dating to the lateI 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