Columbia subject headings:
African Americans--Social conditions--1964-1975.
African Americans--Social conditions--1975-
Middle class--United States.
United States--Social conditions--1960-1980.
Harvard subject headings:
African Americans--Social conditions--1964-1975
African Americans--Social conditions--1975-
Middle class--United States.
United States--Social conditions--1960-1980.
Princeton subject headings:
African Americans--Economic conditions.
African Americans--Social conditions--1975-
Middle class--United States.