Columbia subject headings:
Aesthetics, Modern--19th century.
Aesthetics, Modern--20th century.
Art, Modern--19th century.
Art, Modern--20th century.
Hamburg (Germany)--Intellectual life.
Hamburger Kunsthalle--Administration.
Lichtwark, Alfred, 1852-1914--Aesthetics.
Harvard subject headings:
Aesthetics, Modern--19th century.
Aesthetics, Modern--20th century.
Art, Modern--19th century
Art, Modern--20th century
Hamburg (Germany)--Intellectual life.
Hamburger Kunsthalle--Administration.
Lichtwark, Alfred, 1852-1914--Aesthetics.
Princeton subject headings:
Lichtwark, Alfred, 1852-1914.