[ . . . ] Amsterdam 9 November 1954 Dear Josh, I'm very sorry not to have been able to visit you again but I got involved in work in Berkeley. As you can see, I'm on the point of departing for Europe and I will go and see Bruce Stocker in London and give him your regards. I was wondering whether you could put me on your reprint mailing list (if you have such a thing) as one is so isolated in S. Africa. Incidentally I would very much like a reprint of your PNAS paper this year. My address is: Department of Physiology, Medical School, University of the Witwatersrand Johannesburg South Africa I hope that you won't mind if I write to you at odd times seeking advice. Regards to Esther, Sincerely, Sydney Brenner.