Columbia subject headings:
Music--Italy--Alessandria--History--19th century.
Opera--Italy--Alessandria--History--19th century.
Theater--Italy--Alessandria--History--19th century.
Harvard subject headings:
Alessandria (Italy)--Civilization.
Music--Italy--Alessandria--19th century--History and criticism.
Opera--Italy--Alessandria--19th century.
Theater--Italy--Alessandria--19th century.
Theater--Italy--Alessandria--History--19th century.
Princeton subject headings: