Letter from Howard Walter Florey to Robert Getty, Veterinary College, Iowa State University, Ames Understands from Dr Eyestone that Getty has colony of pigs and is studying process of ageing in pigs - Eyestone suggested they might make mutually advantageous arrangements about examination of 8 year old and 5 year old sows which Getty has been offered - interested in finding if arterial lesions in pigs are common enough to warrant setting up large scale experiment - discusses this work. 3 August 1960