I came across an interesting website, westfordcomp.com/updated/found.htm about old photosthat, well, I’ll use the owner’s description:
The pages below show prints I made from processing film I found in old cameras. In many cases the exposed films were over fifty years old. You are seeing them for the first time as they were lost by the photographers that took these images.
Very fascinating, and considering how important photos are to many genealogists, and how many have been lost over the years, it’s almost sad.