Posted By:
steve fFirst, I don't know too much about early baseball;
Your stereo appears to shows a rather large hospital, sanitorium (inornate, drab, whitewash) of some sort. The photo appears New England-ish (Maples). Perhaps a major town. Salem, Portsmouth, Portland, Manchester, Gloucester etc.
There is a lot of white/light garments and several women are wearing the same or similar uniforms, also more than a few white aprons.
I'd bet if you forwarded this to a few Historical Societies you'd get some guidance. I've done this and it had paid off and the contact people seemed really into it -mostly. If it were mine, I'd be relentless, then again I'm a compulsive.
Good luck