He then developed the company to a broader scale after the French Liberation expanding its activities (mainly billboard advertising and radio) worldwide, including the UK, Belgium, Italy, Spain, Canada, and the Caribbean.

He is a founding member of L’Académie nationale des arts de la rue (ANAR) created in 1975 with Marcel Bleustein-Blanchet, Maurice Cazeneuve, Paul Delouvrier, Georges Elgozy, Roger Excoffon, Abraham Moles, and André Parinaud.

[8] Jacques Dauphin has turned billboard advertising into a popular art form, a witness of the contemporary society, and one of the leading media of the 20th century in Europe.

After the tragic death of his only son Laurent in 1988, and due to the young age of his only granddaughter Charlotte, Jacques Dauphin had no heir to take up the business.

[9][10] His only heiress is his only granddaughter Charlotte Dauphin who has married Comte Charles-Henri de La Rochefoucauld in 2012 in Saint-Louis des Invalides cathedral in Paris, France.