Columbia subject headings:
Art nouveau--France--Congresses.
Art, French--19th century--Congresses.
Art, French--20th century--Congresses.
Art, Modern--19th century--Congresses.
Art, Modern--20th century--Congresses.
Decoration and ornament--France--Art nouveau--Congresses.
Guimard, Hector, 1867-1942--Congresses.
Guimard, Hector, 1867-1942--Exhibitions.
Guimard, Hector, 1867-1942--Influence--Congresses.
Harvard subject headings:
Art nouveau (Architecture)--France--Paris--Congresses.
Guimard, Hector, 1867-1942--Congresses.
Guimard, Hector, 1867-1942--Exhibitions.
Princeton subject headings:
Guimard, Hector, 1867-1942--Congresses.