Taking thousands of photos runs in my family.

Taking thousands of photos runs in my family. I’ve been going through boxes to see what papers can be thrown away, but saving all of the photos for later evaluation. This is from one of my grandfather’s boxes. I have daily planner diaries going back to the 20s.
#g
Does anyone know what produced this particular format? They’re like slides, but they’re in pairs, in plastic or metal cases. I am guessing they might be 3-D. I haven’t looked at the images closely yet. And they were probably taken back maybe in the 50s.
How big are the images?
Michael Verona Standard 35mm slide size. I did some searching and found them.
images.google.com – Image: STEREO REALIST STEREOSCOPIC CAMERA & VIEWER – MODEL ST-61 (Red …
Very cool! I immediately thought ViewMaster.
Cool! Stereo looks best when the foreground is closer. So please post some samples where the subject isn’t so far away!
I can cross-eye pairs, but can’t wall-eye so easily.
I have a Nimslo – still have it! In the 90’s getting linticular prints was less than a dollar each on a whole roll, so I took a bunch! (Then the company sold and prints went up to $4/ea, and that wasn’t a price I could snappy-snap all the time…so I ended up putting it away.)
I really miss that camera, and poke around every once in a while to see if someone has taken it back up. Surely the processing equipment is out there, sitting in a warehouse, unused…