Jackson Arn reviews “Anything but Simple: Gift Drawings and the Shaker Aesthetic,” a surprising show at the American Folk Art Museum.

Sometimes Rembrandt “corrected” their renderings by drawing over their work. In the casual atmosphere of the studio, completed drawings by master and pupils would often be intermingled.

A one-legged Chinese street beggar has sparked widespread interest on mainland social media with his chalk pavement drawings of Leonardo da Vinci’s famous Mona Lisa and “China’s Mona Lisa ...