↑Dixon, Kassie (November 15, 2017). "Newell, Perle Potter Penfield". Handbook of Texas Online. Texas State Historical Association.
↑Cordery, Stacy A. (January 19, 2017). "Pennybacker, Anna J. Hardwicke". Handbook of Texas Online. Texas State Historical Association. Retrieved August 13, 2020.
↑Moser, Amanda (March 19, 2019). "Roper, Mary Withers". Handbook of Texas Online. Texas State Historical Association.
↑McArthur, Judith N. (February 22, 2020). "Sterling, Florence M."Handbook of Texas Online. Texas State Historical Association.
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