Letter from Howard Walter Florey to A C Ritchie, Pathology Department, McGill University, Montreal Has been thinking about Malcolm Silver - difficult to undertake to have someone in three years' time - comments on this - if Silver wants to come to Britain, suggests he take up matter at later date - suggests it might be better for Silver to finish his PhD before coming - hopes he may see Ritchie when Ritchie comes to Britain in 1960. 24 October 1959