Historian, sociologist, educator and civil rights activist Dr. W.E.B. Du Bois lectured at Vassar on "Racial Segregation."  A founding member of the National Association for the Advancement of Colored People (NAACP) and the first African-American to receive a doctorate from Harvard University, Dubois published some three dozen books over nearly 70 years, ranging from The Study of the Negro Problems (1898) to An ABC of Color: Selections from Over a Half Century of the Writings of W. E. B. Du Bois, which appeared in 1963, the year of his death at the age of 95.  His The Souls of Black Folk (1903) is an American classic, and his autobiography, The Autobiography of W. E. Burghardt Dubois, appeared posthumously in 1968.