a % TECHNISCHE HOGESCHOOL ; Laboratorium Voor ; Delft, December 18, 1952. Microbiologie Nieuwe Laan 5 Dr. W.H. Peterson, Department of Biochemistry, University of Wisconsin, Madison 6, Wisconsin, U.S.A, Dear Dr. Peterson, As for the second part o coming to the United States at Harvard in the second 1 to make a short tour to vi microbiological research an van Niel at Facific Grove, I would enable me to-fa3 her @ very glad to rea at you\think tter, I am indeed to give some lectures ยป After that I hope / the centres of lly visit my friend already hoped that this Lt to Madieon, and I was 211 be welcome there. I cannot yet be willing to dig shall be most g finite program but if you will tion with your colleagues I With kindest regards, also to Mrs Peterson, Yours sincerely, (Signed) A.J. Kluyver