At this level, Picasso’s work could be taken on by the art dealer Léonce Rosenberg. They renewed their friendship, but Picasso started to frequent new social circles. Photograph by Ricard CanalsPicasso’s training underneath his father began before one-time offer 1890. His progress could be traced in the collection of early works now held by the Museu Picasso in Barcelona, which supplies one of the most complete extant data of any major artist’s beginnings.