Tel. 23.029; 29,038 - Indirizzo telegrafico: Istgenetica - Pavia WLLCS/om ISTITUTO DI GENETICA UNIVERSITA DI PAVIA VIA SANT’ EPIFANIO, 14 PAVIA SEP 3 0 1963 Sevtember 20, 1953 Prof. Joshua TLederbers Stanford Universi ty Medical Center Department of Genetics Palo Alto, Calif. Dear Joshua, the answer to all your problems on fer- tility is vrobably in the enclosed programme of research for Iceland. Please let me know your reactions. This might be set up in a relatively short time, if money is available. As to your questions, I am ew little skevti- cal on using geneticists for birth order and fertility. Kost of them have not completed families and country- to-country variations are probably very serious. I am afraid I do not know of any data. There is no improvement sofar for our financial problems, as there will be such a serious cut in all American sources of financial aid. Please keen informing me of all possible new sources. All the information you sent were very interesting. You seem to have a number of new toys in the lab! It is more probable that I can visit you in January rather than December. The summer is still a problem, though I am sure I will see enough things in January that I will try to come at least for vart of the summer. I am enjoying Walter's visit here and we are working at the book. All the best, Yours Leb. Cavalli-Sforza