Letter to Harriot Hunt (1853), as quoted in "The Grimké Sisters from South Carolina: Pioneers for Woman's [sic] Rights and Abolition" by Gerda Lerner, Editorial Oxford University Press, (p. 241), 1998.
Frances Ellen Watkins Harper, Frances Smith Foster (1990). “A Brighter Coming Day: A Frances Ellen Watkins Harper Reader”, p.124, Feminist Press at CUNY