Columbia subject headings:
Harvard subject headings:
Biblioteca apostolica vaticana. Museo profano--Exhibitions.
Italy--Antiquities--Exhibitions.
Pius IX, Pope, 1792-1878--Journeys--Italy--Pompeii (Extinct city)--Exhibitions.
Pius IX, Pope, 1792-1878--Travel--Italy--Pompeii (Extinct city)--Exhibitions.
Pompeii (Extinct city)--Exhibitions.
Princeton subject headings:
Biblioteca apostolica vaticana. Museo profano--Exhibitions.
Italy--Antiquities--Exhibitions.
Pius IX, Pope, 1792-1878--Travel--Italy--Pompeii (Extinct city)--Exhibitions.
Pompeii (Extinct city)--Exhibitions.