That's some crazy detective work. Thank goodness the people weren't just like, "Sweet, new camera," and never thought about it again.
After I left my camera in a guy's truck in the Negev, I felt like an idiot. Then I tried to think back and figure out whether there would be any way for him to know who the camera belonged to, or where to send it. Unfortunately, I don't think it would have even been possible. So, in exchange for a free ride through the desert, this guy ended up with a fairly nice Kodak digital camera. At the very least, he was rewarded for his kindness.