Letter from Percival Hartley, Bigwood Road, London to Howard Walter Florey Thanks for letters - knows how Florey's work has been "cashed in on" - whole penicillin achievement has been Florey's and Fleming's comments on reports in press and request to H Dale that Dale point out to the British Medical Journal, Lancet and Nature that credit for penicillin belongs to Florey and Fleming only - comments on this and on his role in the work. 11 June 1944