Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--History--1918-1945--Sources.
Berlin (Germany)--Politics and government--20th century--Sources.
Hitler, Adolf, 1889-1945
National socialism--Germany--Berlin--Sources.
Nationalsozialistische Deutsche Arbeiter-Partei.
Princeton subject headings:
Berlin (Germany)--History--1918-1945--Sources.
Hitler, Adolf, 1889-1945.
National socialism--Germany--Berlin--Sources.