Columbia subject headings:
Drawing, Austrian--20th century--Exhibitions.
Drawing, German--20th century--Exhibitions.
Drawing, German--21st century--Exhibitions.
Drawing, Swiss--20th century--Exhibitions.
Harvard subject headings:
Drawing, Austrian--20th century--Exhibitions.
Drawing, German--20th century--Exhibitions.
Drawing, German--21st century--Exhibitions.
Drawing, Swiss--20th century--Exhibitions.
Drawing--Missouri--Saint Louis--Exhibitions.
Princeton subject headings:
Drawing, Austrian--20th century--Exhibitions.
Drawing, German--20th century--Exhibitions.
Drawing, German--21st century--Exhibitions.
Drawing, Swiss--20th century--Exhibitions.
Drawing--Missouri--Saint Louis--Exhibitions.