CARNEGIE INSTITUTION OF WASHINGTON DEPARTMENT OF GENETICS COLD SPRING HARBOR, LONG ISLAND, N. Y. 20 February, 1950 Dr. Joshua Lederberg Deabrtmant of Gene tics University of Wisconsin Madison, Wise onsin Dear Joshua: I have been in mite a stew over Kennedy's application for m assistantship. He has been my assistamt since he caue here, and I know his capacities well. Dr. Demerec, who hardly knows him, gave him the application blenk out of kindness, knowing that he was looking eround for something for mxt yer. I strongly advised him not to apply, but he didn't tame my advice, and went ahead with it. Hw asked me to write a supporting letter, which I did, after much cogitation. I have adopted a policy of never refusing to write such letters, and of telling the truth, but not always the whole truth, on the assumption that perceptive examiners will take note of gny significant ommissions. If you heve seen my letter, you w ill know what I man. It is probably as damning as an outright testimonial of mediocrity, but somehow keeps me from feeling responsible for quashing some- one's chances. Since you have asked me directly, I have no alternative but to tell you frankly what I think of Kennedy, and let my conscience take the consequences, Kennedy is a nice guy, and has been a cooperative and quite satisfactory assistant. He works hard, follows directions, is conscientious and thorough, and usually understands the rationale of our experiments. He&s pleasant, hes a good sense @ humor, and is very bright in some ways. However, he doesn't have the quality of intelligence required for udvenced scholarship or first-rate independent thinking, or, at least, such is my opinion. I was not surprised to learn thet his academic record is so poor, although he has facets of brightness that would not show up in that way. My overall judgmanhtwoculd be that le is only a fair bet for admission to graduate school, end a very poa one for the assiatantship. I don't think you could expect him to do any better in graduate course work than he did as an undergraduate, although he has developed a feel for research that might carry him along. He really ought to be encouraged to go in the direction of industrial bacteriology, or some such area, where his particular abilities would be more likely to lead to success, Thanks for your MGB note -- a good idea, which we intend to put into use here. We've used alumi nym caps for everything but aerat yon tubes, but we never ha &l nice little brainstorm. Formaldehyde is down on Demerec's list as nonmutagenic, though I seem to remember Beale setting dubious results with it, am not being able to make up his mind about it. I've never worked with it myself. Would like to know more esbout what you are aoing with germicides -- why only tantalizing tidbits? L'm having a good time with lactose sectors. Sofar, results indicate correlations between frequency of certain sector types and the number cf Robinpw bodies per cell at the time of UV irradiation. Like any correlational attack, it doesn't establish a direct cause-effect connection, but nonetheless it's encouraging. .: oO Aside from this, 1 am busy raising my small son, who is almost a year old and has already broken his first test tube, Greetings to Esther. ' : Sincerely, } = < 7 * 1 : Ey el hn ‘ “ Velyn Witkin : ; Fee : ¢ ne ne , on ‘ co 5 x : : 5 & 2 & ‘ 7 ae ; 3 FGA Mle RA ea atte a ee tt ae Se aaa ao hal ld can aan ae ated Serer tte atone more once et ce ae mT ee en rae RS mb ages ot Poe Aen aaa - ° ee a nn - tee : . _ Ap ” 7 _~ Sk a. aa . ee