THE JOHN CURTIN SCHOOL OF MEDICAL RESEARCH THE AUSTRALIAN NATIONAL UNIVERSITY CANBERRA, A.C.T. Telegraphic Address: Telephone: U 0422 “Natuniv’” 3rd July, 1957 Dr. J. Lederberg, Professor and Chairman Medical Genetics, ~ Genetics Building, . University of Wisconsin, Madison 6, . WISCONSIN. \. Dear Dr. Lederberg, Thank you for your letter of 24th June. I accept your suggestion for the 20 minutes introduction on Monday morning and as far as the abstract is concerned, there is certainly no need to deliver that to me until the time of. the meeting or even shortly afterwards. It appears from Halliday's letter that the best "reefing" is to be had on the weekend of the 24th-25th as the tides are most favourable at that time. I have therefore written to him to suggest that he should go ahead with arrangements for your trip to the Barrier Reef at this time, and that we should defer indefinitely arrangements for a trip to the Snowy Mountains. This will mean that you will leave Canberra at 5.20 on Friday afternoon, 23rd August, for Brisbane and will leave Brisbane next morning for Gladstone, near the Barrier Reef. We look forward very much to seeing you in August. With best wishes, Yours sincerely, hah Aer ~ Frank Fenner Professor of\ Mic iology