Columbia subject headings:
Exhibition catalogs.
Innocenti & Webel (Firm)--Exhibitions.
Landscape architects--United States--Exhibitions.
Harvard subject headings:
Innocenti & Webel (Firm)--Exhibitions.
Landscape architects--United States--Exhibitions.
Webel, Richard Karl, 1900-
Princeton subject headings:
Innocenti & Webel--Exhibitions.
Landscape architects--United States--Exhibitions.
Webel, Richard Karl, 1900-