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Nichols, Mary Gove, 1855. Mary Lyndon: Revelations of a Life. New York: Stringer and Townsend; p. 166. Quoted in Feminism and Free LoveArchived 15 January 2006 at the Wayback Machine
Haeberle, Erwin J. (1983). "Pioneers of Sex Education". The Continuum Publishing Company. Archived from the original on 13 March 2008. Retrieved 17 February 2008.
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Nichols, Mary Gove, 1855. Mary Lyndon: Revelations of a Life. New York: Stringer and Townsend; p. 166. Quoted in Feminism and Free LoveArchived 15 January 2006 at the Wayback Machine
Haeberle, Erwin J. (1983). "Pioneers of Sex Education". The Continuum Publishing Company. Archived from the original on 13 March 2008. Retrieved 17 February 2008.