Columbia subject headings:
Gardens--Design--Europe--History.
Landscape architecture--Europe--History.
Harvard subject headings:
Gardens--Europe--Design--History.
Landscape architecture--Europe--Designs and plans--Exhibitions.
Landscape architecture--Europe--History.
Landscape design--Europe--History--Exhibitions.
Landscape design--Netherlands--Apeldoorn--Exhibitions.
Princeton subject headings:
Gardens--Design--Europe--History.
Landscape architecture--Europe--History.