Letter from Howard Walter Florey to J H Harley Williams, Chest and Heart Association, Tavistock Square, London Thanks for letter about proposal to write book about penicillin - comments on this - would be glad if Williams, should he write on penicillin, would correct some misapprehensions about the Oxford work - would like to consult his colleagues - says Williams should see Dr Heatley - suggests that Williams come after his holiday in September. 13 August 1959