Columbia subject headings:
Arts and society--History--18th century.
Arts, Modern--18th century.
Invisibility.
Visibility.
Visual perception.
Harvard subject headings:
Arts and society--History--18th century.
Arts, Modern--18th century
Invisibility
Visibility.
Visual perception
Princeton subject headings:
Arts and society--History--18th century.
Arts, Modern--18th century.
Invisibility.
Visibility.
Visual perception.