. “Mr. Dexter the Bearer” was Aaron Dexter (1750–1829), Harvard 1776, hon. M.D. 1786; professor of chemistry and materia medica at the Harvard
Medical School, 1783–1816 (
Harvard Quinquennial Cat.
; Kelly, Amer. Medical Biog.
). The enclosed letter from Dexter's “partner” has not been found, but Richard Cranch
in his letter to
, 28 May
, below, not only specifies Dexter's errand abroad but identifies his partner as Dr.
Thomas Welsh of Boston, a family connection, on whom see a note at vol. 3:78–79
, above, and Adams Genealogy.