Apparently addressed to Dr. Francis Archibald. Cf. G.L. Kittredge's introduction to: Mather, Increase. Several reasons ... (Cleveland, 1921), p. 24. and ONLINE VERSION AVAILABLE TO AUTHORIZED PSU USERS.
Digital image available in the Readex/Newsbank Digital Evans series.
Microopaque. [New York : Readex Microprint, 1955-1983. 23 x 15 cm. (Early American imprints. First series ; no. 2229).
Austin, R.B. Early Amer. medical imprints, 1142 and Evans, C. American bibliography, 2229