Letter from Howard Walter Florey to D L Wilhelm, School of Pathology, University of New South Wales, Kensington, Sydney Says their electron microscope is a Philips E M 100B - comments on this - advises Wilhelm to start with machine of this nature as it will take a couple of years to master technique of cutting adequate sections - recommends that Wilhelm have a good look at a Huxley Microtome before buying any other. 18 July 1961