History 3 African Americans 2 Blacks 2 Civil rights 2 Droits 2 Histoire 2 Noirs américains 2 more ... 20th Century 1 Biography 1 Civil rights demonstrations 1 Civil rights workers 1 Conditions sociales 1 Crises économiques 1 Depressions 1 Défenseurs des droits de l'homme 1 Discrimination 1 Donna Harsh Collection 1 Droughts 1 Dust Bowl Era, 1931-1939 1 Dust Bowl, États-Unis, 1931-1939 1 Dust storms 1 Environmental Science & Ecosystems 1 Farm life 1 Farmers 1 Great Depression, 1929-1939 1 JUVENILE NONFICTION 1 March on Washington for Jobs and Freedom, Washington, D.C., 1963 1 Montgomery (Ala.) 1 Parks, Rosa, 1913- 1 Science & Nature 1 less ...