Columbia subject headings:
Architecture--United States--History--20th century.
Wright, Frank Lloyd, 1867-1959--Criticism and interpretation.
Harvard subject headings:
Princeton subject headings:
Architecture--United States--History--20th century.
Hollyhock House (Hollywood, Los Angeles, Calif.)
Johnson Wax--Buildings.
Unity Temple (Oak Park, Ill.)
Wright, Frank Lloyd, 1867-1959--Criticism and interpretation.