 When their father retired, they became directors.Having established their own networks, the brothers opened their own separate galleries in the city's 8th arrondissement, with Paul at 21 rue La Boétie (opened in 1911) and Léonce in the rue de la Baume.Léonce became a noted champion of Cubism, a lead that Paul followed, but being located in a more noted art district, he gained better contacts and greater finances.