Columbia subject headings:
Harvard subject headings:
Capri Island (Italy)--Description and travel.
Douglas, Norman, 1868-1952--Journeys--Italy--Capri Island.
Douglas, Norman, 1868-1952--Journeys--Italy--Sorrento Region.
Sorrento Region (Italy)--Description and travel.
Princeton subject headings:
Capri (Italy)--Description and travel.
Sorrento (Italy)--Description.