Dear Joe: Some typgographical corrections on Memo dated 9/22.: The man is Ted Hauschk, at Roswell Park. Chester Beatty lab an London. Nadi (not knotty) reagent. You probably caught most of thik in your own listening. ~~ By the way, Tom Nelson showed up at the lab. here, primarily to go over an as. on kinetics of recombination that is about ready for publication. I haven't told hin that I mentioned you to hia, but having talked to him, I would not take back ay recommendation. He is on his way West, address indefinite just now, but his father (at Rye) is handling his mail. We have a W-1485 S* of our own now, ami will include same with W-2745 (Serratia) in a shipment today. Yours sincerely, Joshua Lederberg bby