Francis G Blake, Dean, Yale University School of Medicine to John F Fulton Comments on supply of penicillin to selected clinics - Marck's production going excellently - no difficulty in sending penicillin to Britain - British pharmaceutical companies should be made to cooperate - possibly American companies have nothing significantly new to add about chemistry or synthesis. Manuscript note from J H Burn to E Mellanby - asks him to send letter to Florey - Merck telephoned about sending penicillin. 6 November 1942