Exhibition at the Metropolitan Museum of Art will focus on the preparatory sketches for some of the French painter’s best known masterpieces

Scientific testing reveals that the artist radically changed his depiction of a Paris couple in a landmark 1788 painting

Humphrey Wine’s lavishly illustrated book details the London museum's 60 authentic works and 12 replicas, copies or pastiches

Both works will first be shown at Château de Malmaison, former residence of Emperor of the French before travelling to the Brooklyn Museum

The rushed deaccessioning—to fund the acquisition of another work from neighbouring Quebec—raised a storm of criticism