Columbia subject headings:
Siena (Italy)--History--18th century--Sources.
Harvard subject headings:
Nobility--Italy--Siena--Diaries.
Pecci, Giovanni Antonio, 1693-1768--Diaries.
Pecci, Pietro--Diaries.
Siena (Italy)--Civilization--18th century.
Siena (Italy)--History--18th century--Sources.
Siena (Italy)--Social life and customs--18th century.
Princeton subject headings:
Siena (Italy)--History--18th century--Sources.