Columbia subject headings:
Gide, André, 1869-1951--Correspondence.
Mockel, Albert, 1866-1945.
Harvard subject headings:
Authors, French--20th century--Correspondence
Gide, André, 1869-1951. Correspondence
Mockel, Albert, 1866-1945--Correspondence.
Mockel, Albert, 1866-1945.
Princeton subject headings:
Authors, French--20th century--Correspondence.
Gide, André, 1869-1951. Correspondence.
Mockel, Albert, 1866-1945--Correspondence.