(C ) Ud Medical Research Council in association with Northwick Park Hospital Management Committee CLINICAL RESEARCH CENTRE Watford Road, Harrow, Middlesex HA1 3UJ telephone: 01-864 5311 telex: 923410 Dr J. Lederberg, Brent Bridge Hotel, 9th Brent Street, July London NW4 1973 Dear Joshua, I am very much looking forward to meeting all three of you. A car will come for you at 11 o'clock and bring you straight to the Clinical Research Centre, the main entrance of which is also the main entrance of Northwick Park Hospital. When you arrive would you please ask Reception to telephone me and then take the lift to the 5th floor where you will be met and brought to my room. I will arrange for a return trip leaving here at 4.15pm, which will give you a little time to hear about some of the projects afoot here.