[laughter] and so someone said going to talk to yella's viagra fer. saugatuck to yella's biographer and we are having a conversation and talk for an hour about his chemistry etc., etc. peery i am about to leave and he says wait a second before you go i don't know if you're interested but i was in boston in 1950 visiting the clinic in order to compile his eye of become and i have all -- i have a roster of his patients with leukemia. and this was a stunning moment for me and out of the file came a series of patience names and pictures and that's how i found this child, this missing child and rs was robert sandler, the three-year-old child and in fact the boston sunday herald had printed a picture of him in 1948 when he had just begun to respond to chemotherapy because again this was a historical moment. but of course, none of this is searchable. this is a time this is not indexed, so would have never, ever discovered him. so in a sense this became a metaphor for the writing of this book which is that you might look for something and get in reality might