Havas, once known as Havas Conseil, is a Paris-based multinational advertising and public relations company, responsible for numerous ad-oriented posters and illustrations.
Featured image: Havas Conseil - Union Francaise d'Ameublement (detail). Date unknown. Stone Lithograph. 30 1/4 × 46 in. 76.8 × 116.8 cm. This is ephemera, an artifact related to the artist. Photo courtesy ArtWise