"The Accordion portrayed in vintage photographs." At a whopping 865 photos, it's sure to keep you occupied for hours. The pictures are interesting, like a social history of the accordion. Unfortunately, the captions do not provide useful information about the subjects and sources of the photographs are not provided. By the way, I was referred to this group by a poster in The Accordion Forum, a great new forum devoted to the PA and CBA. I highly recommend visiting there and jumping into a few discussions, especially if you can share your knowledge and talents.
The second site I'll share is the webpage of Ray Laforest. Now passed on, Ray was a box collector and repairman in Ontario, Canada with a passion for accordions. His collection was huge! And he made photos of the lot available to the public via his website. Thanks, Ray.