Hector Guimard – Fontes Artistiques Poster for April-May 1971 Exhibition at Galerie Du Luxembourg. Hector Guimard (1867-1942) is one of the most prominent representatives of the Art Nouveau style. His prolific creative activity left us with an architectural and decorative legacy that spans 15 years of work. Art Nouveau. Guimard is one of the last to use cast iron in an industrial fashion in numerous projects, such as the entrances to the Paris Metro. Measures 19 x 24″