Columbia subject headings:
Celan, Paul--Correspondence.
Celan-Lestrange, Gisèle--Correspondence.
Demus, Klaus, 1927---Correspondence.
Demus, Nani, 1925---Correspondence.
Harvard subject headings:
Celan, Paul--Correspondence.
Celan-Lestrange, Gisèle, 1927-1991--Correspondence.
Demus, Klaus, 1927---Correspondence.
Klaus, Nani (Anna), 1925---Correspondence.
Princeton subject headings:
Authors' spouses--Correspondence.
Authors, German--20th century--Correspondence.
Celan, Paul--Correspondence.
Celan-Lestrange, Gisèle--Correspondence.
Demus, Klaus, 1927---Correspondence.
Demus, Nani, 1925---Correspondence.