Columbia subject headings:
Harvard subject headings:
Ewig, Helene--Correspondence.
Müller, Lothar, 1920---Correspondence.
Soldiers--Germany--Correspondence
World War, 1939-1945--Correspondence.
Princeton subject headings:
Müller, Lothar, 1920-1942--Correspondence.
Personal correspondence.
Soldiers--Germany--Correspondence.
World War, 1939-1945--Correspondence.