A portrait of a mystery woman was found beneath Pablo Picasso's "Portrait of Mateu Fernández de Soto" by the Courtauld Institute of Art in London.

Walter Gramatté's portrait of Rosa Schapire shows the 46-year-old art historian wearing a skeptical gaze while resting a finger on her cheekbone.

Art historians studying a painting by Pablo Picasso have uncovered the mysterious portrait of a woman, hidden beneath its surface. The portrait of the woman was lost when Picasso painted over it ...