According to the 16th-century artist and historian Giorgio Vasari, it was Jan van Eyck who invented oil painting in the 15th century. But modern historians have since posited that the technique was invented before Van Eyck’s time. Still, his innovations had a lasting impact, and for generations Flemish artists continued to refine and utilize oils, which often required extensive preparatory drawings. Artists such as Pieter Bruegel, Peter Paul Rubens, Anthony van Dyck, and Jacques Jordaens shared sketches to exchange ideas; they also used the medium of drawing to make detailed studies of landscapes and the human figure. In this rare display, 120 drawings by Flemish masters are on view, including 30 that have never before been shown to the public. —Elena Clavarino