Columbia subject headings:
Harvard subject headings:
African American boys--Economic conditions--Congresses.
African American boys--Social conditions--Congresses.
African American men--Economic conditions--Congresses.
African American men--Social conditions--Congresses.
Princeton subject headings:
African American boys--Economic conditions--Congresses.
African American boys--Social conditions--Congresses.
African American men--Economic conditions--Congresses.
African American men--Social conditions--Congresses.