March 29, 1954 Dear Mr. Hoenigsberg: I'm gure. I don't know what you had in mind for a "summer assistantship’, but as ali our vacancies for the coming year have been filled, it may not matter. Perhaps you might write to Dr. M. Demerec at the Biol. Labs., Cold Spring Harbor, L.I., N.Y., concerning the course in bacterial geretics offered there during the sunmer. Yours sincerely,