Columbia subject headings:
Architectural drawing--United States--20th century--Exhibitions.
Wright, Frank Lloyd, 1867-1959--Exhibitions.
Harvard subject headings:
Architectural drawing--United States--20th century--Exhibitions.
Wright, Frank Lloyd, 1867-1959--Exhibitions.
Princeton subject headings:
Architectural drawing--United States--20th century--Exhibitions.
Wright, Frank Lloyd, 1867-1959--Exhibitions.