Columbia subject headings:
Landscape architecture--United States--History--Sources.
Manning, Warren H. (Warren Henry), 1860-1938--Archives.
Harvard subject headings:
Landscape architects--Massachusetts.
Landscape architecture--Study and teaching--Iowa.
Manning, Warren H. (Warren Henry), 1860-1938.
Warren H. Manning Collection--Bibliography--Catalogs.
Warren H. Manning Collection--Catalogs.
Princeton subject headings: