Columbia subject headings:
Gertler, Mark, 1891-1939. Bathers.
Levin, Shaun. Trees at a sanatorium.
Harvard subject headings:
Gertler, Mark, 1891-1939--Criticism and interpretation.
Gertler, Mark, 1891-1939. Bathers.
Levin, Shaun. Trees at a sanatorium.
Painting, English--20th century
Princeton subject headings:
Gertler, Mark, 1891-1939.
Painting, English--20th century.