Columbia subject headings:
Penna, Sandro--Correspondence.
Poets, Italian--20th century--Correspondence.
Saba, Umberto, 1883-1957--Correspondence.
Harvard subject headings:
Authors, Italian--20th century--Correspondence
Penna, Sandro--Correspondence.
Saba, Umberto, 1883-1957--Correspondence.
Princeton subject headings:
Penna, Sandro--Correspondence.
Poets, Italian--20th century--Correspondence.
Saba, Umberto, 1883-1957--Correspondence.