Columbia subject headings:
Harvard subject headings:
Authors, French--20th century--Correspondence
Beck, Christian--Correspondence.
Gide, André, 1869-1951. Correspondence
Princeton subject headings:
Authors, Belgian--19th century--Correspondence.
Authors, Belgian--20th century--Correspondence.
Authors, French--19th century--Correspondence.
Authors, French--20th century--Correspondence.
Beck, Christian, 1879-1916--Correspondence.
Gide, André, 1869-1951. Correspondence.