"That window, you know, was actually a window to the world, because I could see quite a lot. I could see my mental horizons expand." So explained Nelson Mandela to two British curators, who met with the utterly prolific world leader after he completed a series of colorful lithographs depicting his time spent imprisoned on Robben Island. Mandela's surprising series of sketches, which include unseen pictorials of his cell, the lighthouse, the church, the guard towers and more, are now on view at London's Belgravia Gallery alongside photographs of him captured by Jurgen Schadeberg. The exhibition runs through the month of January 2014.