The courage and accomplishments of the men and women represented in this collection of Knowledge Cards—from educator, editor, and writer W. E. B. Du Bois (cover) to civil rights leader Martin Luther King Jr., from athletes Kenny Washington and Althea Gibson to musical giants Leontyne Price and Duke Ellington, from noted authors Arna Bontemps and Zora Neale Hurston to pioneering aviator Bessie Coleman—have changed the world in ways even they could not have predicted. Each card features a photograph on one side, with a brief biography on the other.