Columbia subject headings:
Harvard subject headings:
Church architecture--Italy--Palermo.
Church decoration and ornament--Italy--Palermo.
Oratories--Italy--Palermo.
Palermo (Italy)--Buildings, structures, etc.
Palermo (Italy)--History--Religious aspects.
Princeton subject headings:
Church architecture--Italy--Palermo.
Church decoration and ornament--Italy--Palermo.
Oratories--Italy--Palermo.
Palermo (Italy)--Buildings, structures, etc.
Palermo (Italy)--Church history.