Shirley J. Yee "Cary, Mary Ann Camberton Shadd," American National Biography Online, February 2000, http://www.anb.org/articles/09/09-00875.html.
During the Civil War she traveled to the United States to help recruit soldiers for the Union army. In 1869, Mary Ann Shadd Cary, by now a widow, moved to Washington, D.C., with her two children. Later, she lived with her older daughter, Sarah E. Cary Evans, a schoolteacher. Between 1869 and 1871 she began her studies in law at Howard University but stopped for unknown reasons. She resumed her studies in 1881 and received her degree in 1883, the only black woman in a class of five, although there is no evidence that she actually practiced law. She also continued her support for women's rights. In 1878 she delivered a lecture at the annual National Woman Suffrage Association Conference. She died at home in Washington.
Mary Ann Shadd Cary stands as one of the most significant, yet least recognized, abolitionists who worked on behalf of black emigration and the sustenance of black settlements in Canada. At the same time, her lifelong challenge of racism and sexism made Cary an important figure in the struggle for racial and sexual equality during the nineteenth century.