Columbia subject headings:
Women labor union members--United States--History.
Women--Employment--United States--History.
Harvard subject headings:
Labor--United States--History
Women in the labor movement--United States--History.
Women labor union members--United States--History
Women--Employment--United States--History.
Working class--United States--History
Princeton subject headings:
Women in the labor movement--United States--History.
Women labor union members--United States--History.
Women--Employment--United States--History.