Columbia subject headings:
Frank, Nino--Correspondence.
Jacob, Max, 1876-1944--Correspondence.
Poets, French--20th century--Correspondence.
Harvard subject headings:
Frank, Nino--Correspondence.
Jacob, Max, 1876-1944--Correspondence.
Poets, French--20th century--Correspondence
Princeton subject headings:
Frank, Nino--Correspondence.
Jacob, Max, 1876-1944. Correspondence. Selections
Poets, French--20th century--Correspondence.