Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1918-1933
Statesmen--Germany--Biography.
Wehner, Herbert, 1906-
Wehner, Herbert, 1906---Correspondence.
Princeton subject headings:
Baumann, Max, 1903-1961--Correspondence.
Germany--History--1918-1933.
Politicians--Germany--Correspondence.
Socialism.
Statesmen--Germany--Biography.
Wehner, Herbert, 1906---Correspondence.