22 November 1960 Dr. T. 4. Sonneborn Department of coology, Jordan Hall Indiana University Bloomington, Indiana Dear Dr. Sonneborn: I'm sorry thet you will not be able to be present at the dinner for Dr. Muller. However, you will certainly be there with us in spirit. Your kind ef voluntary offer to contribute something toward a gift for him is very much appreciated. Since other unsolicited contributions have been received it has been decided to present him with a token gift. In case i did not include the address for this celebration in my last letter, it will be held at the