BEAUX-ARTS M-O. 40 letters or pieces, most of them L.A.S. Achille Louis Martinet (2 to Charles Jourdain, 1875). Jean-Baptiste Mauzaisse (to Zimmermann, 1833). Pierre-Jules Mène (to Dumas fils to attend L'Étrangère, 1876). Yvonne Mille. Lizinska de Mirbel (6, including 3 in Zimmermann). Antonin Moine (2, to the publisher Krabbe, 1839: biographical card with a list of his works, and to Joseph Zimmermann by offering a pastel). Charles Monginot (with watercolour, 1883). Frédéric Montenard (2). Henri Monnier (on his Ball board, with the small attached board enhanced with watercolour). Adrien Moreau (in Japy). Étienne Moreau-Nélaton (business card). Gustave Morin (2, from the Rouen Museum, 1876-1878). Louis Morin (2, including one in G. Montorgueil sur Montmartre, 1899; plus an engraving and an exhibition card). Charles Louis Müller (2 to Charles Jourdain, including one concerning his project for the Gobelins, 1876). Henri Charles Müller (3, at Motte, Naigeon and Treuttel & Würtz, 1820-1831). William Müller (in Rev. Jutkin, Xanthe 1844, account of his trip to Lycia). Célestin Nanteuil (4, one to Baron Taylor in 1840 about the discovery of a painting by Poussin, and one to Anastasi in 1849). Bernard Naudin. Émilien de Nieuwerkerke. Balthasar Ommeganck (2, Antwerp 1814 to A. Van Roosmalen, and examination of a painting by Van Brée). Justin Ouvrié. Etc.