Columbia subject headings:
Harvard subject headings:
Germany--History--1933-1945--Sources.
International Tracing Service--History.
Missing children--Germany--History--20th century.
Missing children--Germany--Registers.
Missing persons--Germany--Registers.
Missing persons--Investigation--Germany--History--20th century.
War victims--Germany--Archival resources.
World War, 1939-1945--Prisoners and prisons, German.
Princeton subject headings:
International Tracing Service--History.
Refugee children--Services for--Europe.