Letter from Howard Walter Florey to C O S Blythe Brooke, Public Health Department, Finsbury Health Centre, London Apologises for not having kept Brooke informed about developments following investigation of Brotzu's fungus - some products may be of use in medicine, although they are difficult to produce - is enclosing reprints - in lecture in USA mentioned that he received fungus through Brooke. 8 January 1957