Columbia subject headings:
Harvard subject headings:
College teachers--United States--Biography.
College teachers--United States--Economic conditions.
College teachers--United States--Social conditions.
Social mobility--United States.
Working class--Education--United States
Working class--United States
Princeton subject headings:
College teachers--United States--Biography.
College teachers--United States--Economic conditions.
College teachers--United States--Social conditions.
Social mobility--United States.
Working class--United States.