Ambroise_Vollard--Andre_Derain

Ambroise Vollard (3 July 1866 – 21 July 1939) was a French art dealer who is regarded as one of the most important dealers in French contemporary art at the beginning of the twentieth century. He is credited with providing exposure and emotional support to numerous then-unknown artists, including Paul Cézanne, Aristide Maillol, Pierre-Auguste Renoir, Louis Valtat, Pablo Picasso, André Derain, Georges Rouault, Paul Gauguin, and Vincent van Gogh.
He was also an avid art collector and publisher, especially of print series by leading artists.