Columbia subject headings:
Architecture--United States--History--20th century.
Wright, Frank Lloyd, 1867-1959.
Harvard subject headings:
Architects--United States--Biography
Architecture--United States--History--20th century
Wright, Frank Lloyd, 1867-1959--Criticism and interpretation.
Princeton subject headings:
Architecture--United States--History--20th century.
Wright, Frank Lloyd, 1867-1959.