Istgenetica - Pavia Tel. 23.029 ; 29.038 - Indirizzo telegrafico : LOth October 1960 Professor Joshua Lederberg, ISTITUTO DI GENETICA Department of Genetics, UNIVERSITA DI PAVIA Stanford, iledical School, VIA SANT’ EPIFANIO, 14 Palo Alto, California PAVIA wy dear Joshua, I hope you have received my tape on the questionnaire of consanguinity etc. in drug idiosyn- cracies,. I heard nothing more about it: have you given up the idea? Perhaps the major obstacle is the low frequency of consanguinity in the U.S. But the state of lnowledge on the subject is so poor, and there are likely to be many pockets of high consanguinity, that it may still be worth doing it. Since our return I have had so many urgent assignments and visits, that only now have I started breatning again. You will hear from Giovanni all details of the present stand of my own situation (which is not altered since I left the States) of the general situation of Adriano's enterprises, still unsettled, of the Interist story and our present hopes and aims in it, so that I do not need to go into them now. Giovanni will also carry your slippers. I had trouble in finding them larger, but they shoulc be available in a fortnight or so. Should you find tle present vair too small, you can give it to Giovanni,we wll ship a larger pair. lund. I have an urgent request. ‘hen I was in stanford I had all instructions on transformation by Gene Nester but not the strains of B. subtilis. Could you take with you cultures of a wild type end a suitable mutant (perhaps a His- Try-) and give then to Giovanni? -~ 2. What if I spent part of April, May and June in Stanford, with the partial purpose of helping you with the course? All the best to you and Esther. Yours, bree Us CR P . { thr J An bec. * ~~ ‘ b Wve, Pande ya o