Columbia subject headings:
Harvard subject headings:
Authors, Italian--19th century--Correspondence
Authors, Italian--20th century--Correspondence
Cian, Vittorio, 1862---Correspondence.
Cian, Vittorio, 1862-1951--Correspondence.
Graf, Arturo, 1848-1913--Correspondence.
Princeton subject headings:
Graf, Arturo, 1848-1913--Correspondence.
Italy--Civilization--1789-1900.