"Chayim S. Chasan" was one of the pseudonyms used by Hallie Lynn (Chaya Sarah) Cantor, writer and associate editor of THE JEWISH READER.
Life of Rabbi Yisrael ben Eliezer -- the "Ba'al Shem Tov" -- founder of the Hassidic movement, who passed away on the Jewish holiday of Shavuot.
Chasan, C.S. (1992, June / Sivan 5752). Lighting the way. The Jewish Reader, 4,10,21-24.
*This is constructed from limited available data and may be imprecise.