A page long believed to have been lost from the Archimedes Palimpsest, one of the most important surviving manuscripts of antiquity, has been identified at the Musée des Beaux-Arts in Blois, central France, by a CNRS researcher. Initial analysis confirms that the page corresponds to page 123 of the Palimpsest and contains a passage from Archimedes' treatise "On the Sphere and the Cylinder," Book I, Propositions 39 to 41. The discovery is presented in an appearing in Zeitschrift für Papyrologie und Epigraphik.