1614 https://demo.fonds-documentaire.fr/detail.php?inventaire=1614 Sleep: sketch for the painting, now in the museum at Lille Pierre Puvis de Chavannes Wikimedia Commons 1840 image jpg fr Notice iconographique issue de Wikimedia Commons. Titre: Sleep: sketch for the painting, now in the museum at Lille. Drawing | Drawings œuvre d'art tableau sculpture statue wikimedia commons illustration Peintures Tableaux et sculptures Oeuvres d'art Wikimedia Commons https://commons.wikimedia.org/wiki/File:Sleep-_sketch_for_the_painting,_now_in_the_museum_at_Lille_MET_7535.jpg Licence Creative Commons Zero, Public Domain Dedication via Wikimedia Commons https://upload.wikimedia.org/wikipedia/commons/6/6d/Sleep-_sketch_for_the_painting%2C_now_in_the_museum_at_Lille_MET_7535.jpg