Columbia subject headings:
Labor movement--Germany--Hesse--History.
Labor unions--Germany--Hesse--History.
Labor unions--Officials and employees--Germany--Hesse--Biography.
Harvard subject headings:
Labor movement--Germany--Hesse--History.
Labor unions--Germany--Hesse--History.
Labor unions--Germany--Hesse--Officials and employees--Biography.
Labor unions--Hesse-Kassel (Electorate)--History.
Labor unions--Hesse-Kassel (Electorate)--Officials and employees--Biography.
Working class--Hesse-Kassel (Electorate)--History.
Princeton subject headings:
Labor movement--Germany (West)--Hesse--History.
Labor unions--Germany (West)--Hesse--History.
Labor unions--Germany (West)--Hesse--Officials and employees--Biography.