Columbia subject headings:
Harvard subject headings:
Women labor union members--United States--History--20th century.
Working class women--Education--United States--History--20th century.
Working class women--United States--History--20th century.
Princeton subject headings:
Women labor union members--United States--History--20th century.
Working class women--Education--United States--History--20th century.
Working class women--United States--History--20th century.