Letter from John E French to D C G Braddy, Red Hill Pig Farms Ltd, Lidney Believes Mr PArry has spoken to him about their interest in obtaining old pigs for investigation into arterial disease - comments on plan to examine changes which occur in pigs' arteries, which resemble those occuring in man, which cause coronary thrombosis - asks if Braddy has any animals of 7 or more years of age, which he would be willing to sell - comments on this. 12 January 1961