Columbia subject headings:
Harvard subject headings:
Dora (Concentration camp)
Helmetalbahn (Railroad : Germany)
Nationalsozialistische Deutsche Arbeiter-Partei. Schutzstaffel
Nazi concentration camps--Germany
Princeton subject headings:
Forced labor--Germany--Osterode am Harz (Kreis).
Helmetalbahn.
Osterode am Harz (Germany : Kreis)--History--20th century.
World War, 1939-1945--Personal narratives, German.
World War, 1939-1945--Prisoners and prisons, German.