From the age of this bike located in the abandoned barn up the road, I would guess Don to be an adult in his 50's. Speaking of mystery, I found the THE documentary from Sundance Studios on the discovery of Vivian Maier, titled, Finding Vivian Maier, and it is now playing on Netflix. I was prepared to buy it, and am now about half way through watching it. Exceptional film that just adds to the mystery of this incredible and private female photographer (who is now post mortem, exceptionally famous worldwide). Check it out and enjoy the story of her discovery by accident at an auction in Chicago.