Olga's Gallery
Valentin Serov.
Portrait of Sergei (Serge) Diaghilev.
1904. Unfinished. Oil on canvas. The Russian Museum, St. Petersburg, Russia. More. 
Dyagilev, Sergey (Serge) Pavlovich (1872-1929), specialist in drama practice and studies, organizer of art exhibitions, since 1907 used to organize Russian Seasons in Paris