Painter Schandra Singh usually sells her paintings to wealthy art collectors. So when she gets a letter from a father of a boy with autism, saying his son loves her work, she decides to do a trade with him, one of her sketches for one of his. It’s only later that she realizes she’s not the only artist in her circle of friends who got that letter. Reporter Scott Pinkmountain looks into who is behind the form letter. (24 minutes)