M.B.L., Woods Hole, Mass. August 26, 1947. Dear Evelyn, If you are still interested in @ 2-3 day "course" in hybridizing E. coli, my plans ate now settled, and I will be available about Sept. 10-17, preferebly in an earlier segment of that period. Could you let me know whether that would be satisfactory? I shall be here at Woods Hole until about Sept.7; at New Haven for a couple of days, and then in New York, Shortly after Sept. 17, we shall be leaving for Madison, Wisc., whence the restriction on time. Yours sincerely, Joshue,