Columbia subject headings:
Architecture--United States--20th century.
O'Keeffe, Georgia, 1887-1986--Criticism and interpretation.
O'Keeffe, Georgia, 1887-1986.
Painting, American--20th century.
Wright, Frank Lloyd, 1867-1959--Criticism and interpretation.
Wright, Frank Lloyd, 1867-1959.
Harvard subject headings:
Architecture--United States--History--20th century
Architecture--United States--History--20th century.
O'Keeffe, Georgia, 1887-1986--Criticism and interpretation.
O'Keeffe, Georgia, 1887-1986.
Painting, American--20th century
Wright, Frank Lloyd, 1867-1959--Criticism and interpretation.
Wright, Frank Lloyd, 1867-1959.
Princeton subject headings:
O'Keeffe, Georgia, 1887-1986.
Wright, Frank Lloyd, 1867-1959.