USA: H.477-H.480: Correspondence with colleagues at Rutgers University, New Brunswick, New Jersey, and others, 1957-1981. H.481-H.482: Correspondence with colleagues at Berkeley, principally Melvin Calvin and others at the Laboratory of Chemical Biodynamics, 1977-1988. H.483-H.493: Correspondence with colleagues at University of Wisconsin-Madison regarding research collaboration in the field of penicillin and cephalosporin biosynthesis, visits etc.…