Letter from Howard Walter Florey to Eric Riches, Weymouth Street, Portland Place, London Says that John Baker has sent details of Lister's microscope, supplied by Riches, but these have not yet arrived - should like a print of the photograph of the microscope and a slide - has to give Lister 75th Anniversary Lecture on 9 November - thanks Riches for sympathy on death of Lady Florey. 26 October 1966