Interesting stuff about 765. Thank you for posting. Ironic that a mobile object such as a steam engine can be on the National Register of Historic Places.
I found a beautiful large boxed high quality magnifying glass for Dolly. Peter found me a heavy duty long throw cable release. There was an interesting 1895 Rochester camera but Peter and I walked away after some thought about the repairs needed. My usual goal is books of photographer’s works. All I saw were Leica & Nikon related books. My best sources did not have tables there this time.