"27th May, 1947. Dear Lederberg, nd Derlington and I are looking forward to seeing your first dreft on “Problems in the Genetics of Micreorganisme", I presume that it should arrive shortly. . 7 oo: e _I am afraid that I have been so dreadfully busy uring the last few weeks that I have been unable to go into the questions that you asked in your last letter about the dbactersa. I must try, however, and do somthig about it in the near future and I hope to write to you as soon as I have had an opportunity to think over the questions you raised. eee pt . Lo Cole oo. Sa . oO Yours sincerely, Dre Je Lederberg, Osborn Botanical Laboratory, ; - Yale University, OBL, New Haven, Conneotiout, We SeAs