Columbia subject headings:
Dietrich, Marlene--Correspondence.
Remarque, Erich Maria, 1898-1970--Correspondence.
Harvard subject headings:
Dietrich, Marlene--Correspondence.
Remarque, Erich Maria, 1898-1970--Correspondence.
Princeton subject headings:
Dietrich, Marlene--Correspondence.
Remarque, Erich Maria, 1898-1970--Correspondence.