History 16 Experiments 4 Social conditions 4 African Americans 3 Gay liberation movement 3 History and criticism 3 Music 3 Political aspects 3 Rock musicians 3 Women 3 African American musicians 2 African American women civil rights workers 2 African American women political activists 2 Assassination 2 Characters 2 Civil rights movements 2 Conservation 2 Dust Bowl Era, 1931-1939 2 Feminism 2 Food 2 Gay men 2 Influence 2 Lesbians 2 Migration, Internal 2 Motion picture producers and directors 2 Musicians 2 Psychological aspects 2 Science 2 Services for 2 Witchcraft 2