Panoramic wallpaper project depicting the Carrousel du Louvre and Montmartre with its galette mills, originally between 1790 and 1865. Gouache (central fold). Height 23.5 cm - Width : 45 cm Provenance: Fonds de la Manufacture Leroy, founded in 1842 by Isidore Leroy, who patented his "multi-color simultaneous printing machine for drapery papers and a printing cylinder for papers and fabrics".