Columbia subject headings:
Pirandello, Luigi, 1867-1936--Criticism and interpretation.
Pirandello, Luigi, 1867-1936--Friends and associates.
Harvard subject headings:
Pirandello, Luigi, 1867-1936--Correspondence.
Pirandello, Luigi, 1867-1936--Criticism and interpretation.
Pirandello, Luigi, 1867-1936--Friends and associates.
Schulz-Lander, Jenny--Correspondence.
Princeton subject headings:
Pirandello, Luigi, 1867-1936--Criticism and interpretation.
Pirandello, Luigi, 1867-1936--Friends and associates.