Autograph Letter Signed ‘C.Le Blanc’, to Monsieur Weigel, thanking him for his notes, and discussing the criteria for including artists in the third volume, and commenting on the future of this publishing enterprise. In French. 2 pp. 8 x 5 inches, in good condition. 59 rue du bac, Paris, 4 April 1850. Charles Blanc (1813-1882) was a French art critic, brother of Louis Blanc. After the February Revolution of 1848, he was director of the department for the visual arts at the ministry of the interior. He published the Histoire des peintres de toutes les écoles (Par. 1849-69, 14 Vols.), which was translated into English and German. Other works included L’œuvre complet de Rembrandt (4. Aufl. 1873, 2 Vols.), and Voyage de la Haute-Egypte, observations sur les arts égyptien et arabe (1876).