Columbia subject headings:
Germany--History--1933-1945--Sources.
Hitler, Adolf, 1889-1945--Correspondence.
Harvard subject headings:
Germany--History--1933-1945--Sources.
Hitler, Adolf, 1889-1945--Correspondence.
Princeton subject headings:
Germany--History--1933-1945--Sources.
Hitler, Adolf, 1889-1945--Correspondence.