Once again I'm posting the backs of the prints because I'm baffled by Leo Rosenthal's handwriting. I can make out Carnegie House. I did a search on that and found a rather expensive apartment house in Manhattan. My guess is that the Carnegie House mentioned is actually the Carnegie Mansion, now owned by The Smithsonian, current home of The Cooper-Hewitt Museum Design Center.
Anyway, I'm just pulling pictures out of the envelope, and posting them as they come, so there's no attempt to bunch them in any order.
