Columbia subject headings:
Harvard subject headings:
Authors--Correspondence.
Goll, Claire, 1891-1977--Correspondence.
Goll, Yvan, 1891-1950--Correspondence.
Goll, Yvan, 1891-1950--Friends and associates.
Ludwig, Paula--Correspondence.
Triangles (Interpersonal relations)
Princeton subject headings:
Authors, French--20th century--Correspondence.
Authors, German--20th century--Correspondence.
Goll, Claire, 1891-1977--Correspondence.
Goll, Yvan, 1891-1950--Correspondence.
Ludwig, Paula--Correspondence.
Personal correspondence.