Letter from Howard Walter Florey to K Hellman, Shepherd's Green, Henley on Thames If Hellman wants to dispose of his 4-5 year old pigs now, should like to buy them - if Hellman does not wish to dispose of them at present, would like opportunity to take them next year - comments on this - need about 20 pigs for preliminary investigation - comments on this - would be helpful to have pigs of both sexes. 2 November 1960