Columbia subject headings:
Authors, English--20th century--Correspondence.
Playfair, Edward Wilder, Sir, 1909---Correspondence.
Raffalovich, André, 1864-1934--Correspondence.
Raffalovich, André, 1864-1934.
Harvard subject headings:
Playfair, Edward, Sir.
Raffalovich, André, 1864-1934.
Princeton subject headings:
Authors, English--20th century--Correspondence.
Playfair, Edward Wilder, Sir, 1909-
Raffalovich, André--Correspondence.