Gents (& any possible ladies out there!),
This is just a quick post, I can follow up with pictures later. At an antique store in my area, I was discussing possible items for my brother-in-law (WWII related) when the fellow mentioned that he'd just rec'd a complete set of 100 stereographic pictures of WWI history. These are the old black & white pics that you need the real old-timey stereo viewers for.
I didn't have time to go through them and see how much aviation related stuff might be in there. He wants $175 for them, shipping included (I assume US only). If there is interest, I can post pictures that may help a little. The cards are "Keystone Viewing Company WWI volumes 1 & 2 100 card set". I have no idea how many more volumes there are, but i am editing to add
this web site that I couldn't help taking time to look up here at work... shame on me! I suspect what I've stumbled on to is volumes 1 & 2 of the 1932 200 card set, but I reserve the right to be smarter, later!
Best,
Tom