MINISTERE DE L’EDUCATION NATIONALE CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE LABORATOIRE DE GENETIQUE PHYSIOLOGIQUE GIF-SUR-YVETTE (SEINE-ET-OISE) Té.. : 136 a GIF Professor J. LEDERBERG Depart ment of Medical Genetics GeneticgBuilding University of Wisconsin MADISON, wisconsin U.Sede Dear Josh, April 26, 1958 I am writing to rewind you that I shall be very happy if, during your next trip to Europe, you could spentl a few days with us here at Gif. As I told you, I believe, I can put y& up here, in the Chateau. Naturally -~ this invitation is extended also to Esther if she will accompany you on your Yen, trip. Please let m know as far when this will be possible. With kind regards, lay, bo [arabe por as | court pane ove A awe 2€ bar om Seliiedaa 26 abn& 0AM NY. al SPM to Paste of bron). et ays at Cuf Sitiiudon amd 5 ‘4 imap ee “GRovdannb pon dhe wrela 'o ) ut well . Ae We- orl fornrresd 6 sturrs , ye + happen Ube Wake of aay toa Hb FoeCtiden WEG VL, ahead of tine as possible whether and Cordially yours jd Boris EPHRUSSI.