Sojourner Truth was not the only black woman. [contrarian]
Sojourner Truth was not the only black woman to advocate social equality for women. Her eagerness to speak publicly in favor of women's rights despite public disapproval and resistance paved the way for other politically-minded black women to express their views. Sexism and racism have so informed the perspective of American historiographers that they have tended to overlook and exclude the effort of black women in discussions of the American women's rights movement. White female scholars who support feminist ideology have also ignored the contribution of black women. In contemporary works, like The Remembered Gate: Origins of American Feminism by Barbara Berg, Herstory by June Sochen, Hidden from History by Sheila Rowbothan, The Women's Movement by Barbara Deckard, to name a few, the role black women played as advocates for women's rights in the 19th century is never mentioned.
bell hooks, Ain't I a Woman_ Black Wome…, loc. 469