Columbia subject headings:
Archaeology--Italy--Rome--History--19th century--Congresses.
Gregory XVI, Pope, 1765-1846--Art patronage--Congresses.
Harvard subject headings:
Archaeology--Italy--Rome--History--19th century--Congresses.
Gregory XVI, Pope, 1765-1846--Art patronage--Congresses.
Princeton subject headings:
Archaeology--Itay--Rome--History--19th century--Congresses.
Gregory XVI, Pope, 1765-1846--Art patronage--Congresses.