I had the good fortune to live near good libraries growing up. I can remember trays of these stereoscopic photos that were available for viewing in handheld st

I had the good fortune to live near good libraries growing up. I can remember trays of these stereoscopic photos that were available for viewing in handheld stereograph viewers. This would have been around 1960, but the photos themselves were of much older scenes as are those in the NY Public Library collection. The photos were mounted in rectangular mounts about 10cm by 25cm. We only had three channels of black and white television back then so the old photos were at least of some interest even to a kid.