Columbia subject headings:
Hesse, Hermann, 1877-1962--Exhibitions.
Hesse, Hermann, 1877-1962--Friends and associates--Exhibitions.
Schlenker, Alfred, 1876-1950--Exhibitions.
Schlenker, Alfred, 1876-1950--Friends and associates--Exhibitions.
Harvard subject headings:
Hesse, Hermann, 1877-1962--Exhibitions.
Hesse, Hermann, 1877-1962--Friends and associates--Exhibitions.
Schlenker, Alfred, 1876-1950--Exhibitions.
Schlenker, Alfred, 1876-1950--Friends and associates--Exhibitions.
Princeton subject headings:
Hesse, Hermann, 1877-1962--Exhibitions.
Hesse, Hermann, 1877-1962--Friends and associates--Exhibitions.
Schlenker, Alfred, 1876-1950--Exhibitions.
Schlenker, Alfred, 1876-1950--Friends and associates--Exhibitions.