8th June, 1965. Dear Marshall, It was most kind of you to send the trinucleotides, which will be very useful. I was very glad to see that you had tested UGA for Trypt and Cys. I am still very puzzled about Holley's s-RNA, as you will have seen by my wobble paper, and look forward to hearing how it behaves in binding studies. About the Gordon Conference. I have only two things to say. One is to report (in Sydney's absence) the evidence that amber and ochre are UAG and UAA respectively. However this really comes under suppression, which I thought Lipmann was dealing with. The other is "wobble" which is only worth about 15 minutes at the end of the session. The major omission from your list is Yanofsky, who has some very important data (or is "Bekjanski" a slip for Yanofsky?). I imagine that Holley will be talking in a different session. I agree that there is no need for the summary to come from the Gordon Conference as such, but I think a joint letter, from those people who happen to be there, would be very useful. Nothing need be put in that any author doesn't want quoted, so the character of the Gordon Conference need not be affected. I'm not keen to write it all by myself, since all I have done is to collate other peoples' work. Why don't we discuss it at New Hampton? I have just written a letter to Abernathy suggesting that Grunberg-Manago, Khorana, Orgel, Zachau and Wittmann be added to Information Exchange Group No. 7. F. H. C. Crick