Auction introduction: Christie’s Impressionist and Modern Works on Paper Sale in New York features a selection of works by the masters of the late 19th and early 20th centuries, including standout examples of modernism and Impressionism by Pablo Picasso, Joan Miró and Piet Mondrian. For over 40 years, Christie’s dedicated Works on Paper Sale has celebrated this unique category as a platform for connoisseurial collecting of a medium rich in experimentation and invention.