Letter from Isaac Mayer to Isaac Leeser;July 14, 1854 Letter from Dr. J. Mayer of Cincinnati, OH, to Isaac Leeser in Philadelphia, PA, dated July 14, 1854 (5614). Mayer discusses a recently published work of Jewish history that he finds deeply offensive and abusive of Rabbinical law. He describes the author's blatant disregard for Jewish tradition and his attempts to ridicule the religion in the eyes of non-Jews. The letter includes Hebrew words and phrases throughout.