Letter from Howard Walter Florey to Mr Keep, Controller of Penicillin Production, Ministry of Supply, London Thanks for letter about Dr Borodin - initial delay seems to have been with Professor Raistrick - comments on this - Dr Sarkisov did not contact Borodin - comments on this - thinks that if other foreigners come, he should communicate directly with the firms - Borodin does not think aspergin is a serious matter and has no information about this. 26 November 1945