Columbia subject headings:
Authors, German--20th century--Correspondence.
Elsner, Gisela--Correspondence.
Elsner, Gisela--Diaries.
Roehler, Klaus--Correspondence.
Harvard subject headings:
Authors, German--20th century--Correspondence
Elsner, Gisela--Correspondence.
Elsner, Gisela--Diaries.
Roehler, Klaus--Correspondence.
Princeton subject headings:
Authors, German--20th century--Correspondence.
Elsner, Gisela, 1937-1992--Correspondence.
Roehler, Klaus--Correspondence.