Olga's Gallery
Valentin Serov.
Portrait of Izabella Grunberg.
1910. Watercolor, whitewash and pencil on paper. Whereabouts unknown. More. 
Grunberg, Izabella Yulyevna, after marriage Kamenetskaya, daughter of Maria Greigoryevna (1853-1924) and Y. O. Grunberg, office manager of the magazine Niva