Columbia subject headings:
Harvard subject headings:
Diplomats--Germany--Correspondence.
Germany--History--William II, 1888-1918--Sources.
Liebermann, Käthe, 1885-1952--Correspondence.
Political scientists--Germany--Correspondence.
Riezler, Kurt, 1882-1955--Correspondence.
Statesmen--Germany--Correspondence.
World War, 1914-1918--Germany--Sources.
Princeton subject headings:
Diplomats--Germany--Correspondence.
Germany--History--William II, 1888-1918--Sources.
Liebermann, Käthe, 1885-1952--Correspondence.
Riezler, Kurt, 1882-1955--Correspondence.
World War, 1914-1918--Germany--Sources.