Columbia Gniversity inthe Citpof Rew Pork [naw vorn 27, 6. ¥.] DEPARTMENT OF ZOOLOGY August 72, 1950 Dr. Joshua Lederberg Department of Bacteriology University of Californias Berkeley 4, Gelifornia Dear Josh, Thenks verv much for your abstrect which indiestes an interest- ing manuscrint to come. Mid-October vill be atl right fer the com>leted manuscript but I would say thet that's the last date. Sincerely vours, LZ. C. Dunn LCuitog