Letter from Howard Walter Florey to Eric Riches, Royal College of Surgeons, Lincoln's Inn Fields, London Says he is to give a lecture to celebrate the 75th Anniversary of the Lister Institute for Medical Research - should like a picture of Lister's microscope or of a similar one - says that Miss H G Child informs him that Riches is in charge of the College's microscopes - asks if there is a chance of getting a photograph. 19 October 1966