Columbia subject headings:
Authors, French--20th century--Correspondence.
Céline, Louis-Ferdinand, 1894-1961--Correspondence.
Physicians--France--Correspondence.
Harvard subject headings:
Authors, French--20th century--Correspondence
Céline, Louis-Ferdinand, 1894-1961--Correspondence.
Gentil, Alexandre, 1878-1949--Correspondence.
Princeton subject headings:
Authors, French--20th century--Correspondence.
Céline, Louis-Ferdinand, 1894-1961--Correspondence.
Physicians--France--Correspondence.