Columbia subject headings:
Harvard subject headings:
Art dealers--France--Correspondence.
Painters--France--Correspondence.
Picabia, Francis, 1879-1953--Correspondence.
Rosenberg, Léonce, 1879-1947--Correspondence.
Princeton subject headings:
Painters--France--Correspondence.
Picabia, Francis, 1879-1953--Correspondence.
Rosenberg, Léonce, 1879-1947--Correspondence.