Old Film Find - T-Max 400 in a Yashica TLR

Just processed in R3, this found image was in a Yashica 635 that I picked up at a flea market a while back.  It is always a thrill to uncover a latent image.  I think the film was in the camera for a long while, and there was a lot of edge fogging, odd curling, and completely fogged sections.

The Yashica 635 twin lens reflex camera is a dual-format camera and as the number suggests, accommodates both 120 and 35mm film, with an adapter. Used often at waist level, the TLR takes that point of view and looks up at most subjects while the photographer looks down at the camera

Who are these people, and who owned this camera? A mystery.