Correspondence, Sabin, A.B., Sampson, M.T., Schindel, L.

Sabin, A.B., 1965 (Chain's carbons only), 1969. 1969 correspondence is re development of oral polio vaccine in the U.S.S.R.

Sampson, M.T., (Chain's carbons only), 1952.

Schindel, L., 1957. Re request to Chain to write a preface to a book by Schindel on antibiotics. Includes letters from A.L. Olitzski and K. Burg