Columbia subject headings:
Families--Pennsylvania--Pittsburgh--History.
Pittsburgh (Pa.)--Economic conditions.
Women--Employment--Pennsylvania--Pittsburgh--History.
Working class--Pennsylvania--Pittsburgh--History.
Harvard subject headings:
Families--Pennsylvania--Pittsburgh--History.
Pittsburgh (Pa.)--Economic conditions.
Women--Employment--Pennsylvania--Pittsburgh--History.
Working class families--Pennsylvania--Pittsburgh--History.
Princeton subject headings:
Families--Pennsylvania--Pittsburgh--History.
Pittsburgh (Pa.)--Economic conditions.
Women--Employment--Pennsylvania--Pittsburgh--History.
Working class--Pennsylvania--Pittsburgh--History.