Columbia subject headings:
Harvard subject headings:
Anti-Nazi movement--Germany--Wuppertal--History--20th century.
German literature--Germany--Wuppertal--20th century--History and criticism.
Labor movement in literature
Labor movement--Germany--Wuppertal--History--20th century.
National socialism--Germany--Wuppertal.
Princeton subject headings:
Authors, German--20th century--Biography.
Communist literature--Germany--History and criticism.
Eggerath, Werner, 1900-1977.
Ginkel, Emil.
Gorrish, Walter.
Kast, Peter.
Möller, Werner, 1888-1919.