Columbia subject headings:
Canaletto, 1697-1768--Catalogs.
Gumberts, William A.--Art collections--Catalogs.
Harvard subject headings:
Canaletto, 1697-1768.
Gumberts, William A.
Princeton subject headings:
Canaletto, 1697-1768--Catalogs.
Gumberts, William A.--Art collections--Catalogs.