[The Vibrant Lives of Exceptional Women Who Have Made World History] Cleopatra; Theodora; Joan of Arc; Mary, Queen of Scots; Queen Christina; Madame de Maintenon; Charlotte Bronte; George Eliot; Elizabeth Barrett Browning; Florence Nightingale; Susan B. Anthony; Frances E. Willard; Catherine Breshkovsky; Sarah Bernhardt; Isadora Duncan; Ernestine Schumann-Heink; Jane Addams; Evangeline Booth; Helen Keller; and Madame Chiang Kai-Shek.
Professor Henry Thomas Schnittkind (1886-1970) was the full name of the American author who also wrote under the pen name Henry Thomas. Highly educated, with a PhD from Harvard, his subjects ranged from mathematics and politics to biography and philosophy. In a Who's Who entry from the late 1930s, he listed his hobby as "education of the masses."
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https://en.m.wikipedia.org/wiki/Henry_T._Schnittkind