Columbia subject headings:
Ernst, Max, 1891-1976. Histoire naturelle--Illustrations--Exhibitions.
Natural history illustration--Germany--Exhibitions.
Harvard subject headings:
Ernst, Max, 1891-1976. Histoire naturelle--Exhibitions.
Ernst, Max, 1891-1976. Histoire naturelle--Pictorial works.
Natural history illustration--Exhibitions.
Natural history illustration--Germany--Exhibitions.
Rubbing--Exhibitions.
Princeton subject headings:
Ernst, Max, 1891-1976. Histoire naturelle--Illustrations--Exhibitions.
Natural history illustration--Germany--Exhibitions.
Pictures.