Columbia subject headings:
Architectural drawing--Europe--19th century--Exhibitions.
Facades--Italy--Florence--Exhibitions.
Santa Maria del Fiore (Cathedral : Florence, Italy)--Facade--Exhibitions.
Harvard subject headings:
Facades--Italy--Florence--Exhibitions.
Florence (Italy)--Buildings, structures, etc.--Exhibitions.
Santa Maria del Fiore (Cathedral : Florence, Italy)--Exhibitions.
Princeton subject headings:
Architectural drawing--19th century--Europe--Exhibitions.
Facades--Italy--Florence--Exhibitions.
Santa Maria del Fiore (Cathedral : Florence, Italy)--Facade--Exhibitions.