H.232-H.246: Sabath, L.D. Sabath came from the Harvard Medical School, Boston, Massachusetts, to work in Abraham's laboratory, 1963-1964. Correspondence regarding arrangements to come to Oxford, research, publications, visits, career, and appointments. 1962-1993.

H.247-H.248: Schaaf, C.H. Schaaf was Resident Representative of the United Nations Development Programme in Ceylon when the correspondence was initiated. Principally non-scientific correspondence but includes a few references to Abraham's work. 1971-1993.

H.249-H.253: Stevens, C.M. Stevens came from the Chemistry Department, Washington State University, to spend a sabbatical year in Abraham's laboratory, 1973-1974. Correspondence and papers re arrangements for sabbatical, research, publications etc. 1972-1980.