May, Samuel Joseph. Letter, 1831-1861. 1 letter. Location: Misc. M. American reformer during the nineteenth century, who championed education, women’s rights, and abolition. In his letter to his cousin, Samuel E. Sewall, Samuel J. May expresses his doubt that the American Colonization Society can have much impact on the institution of slavery. For further information, see online catalog. Mss. 3929.