I just listened to a radio documentary on the Canadian Broadcasting Corporation's series Living Out Loud called "Lost and Found." The first section is about a woman who finds a lot of photos in a dumpster outside a photo lab, and then tried to track down the people who had left them unclaimed at the lab. She got various responses.http://www.cbc.ca/livingoutloud/#
has the show (dated today 2 March 2012). The photo section is at beginning of Part One.