Columbia subject headings:
City planning--United States--History--20th century.
Hilberseimer, Ludwig.
Harvard subject headings:
Architects--Germany
Architecture--United States--History--20th century
City planning--United States--History--20th century
Hilberseimer, Ludwig--Criticism and interpretation.
Princeton subject headings:
City planning--United States--History--20th century.
Hilberseimer, Ludwig.