VALLÉE (Louis Léger). Traité de la géométrie descriptive. Paris, Mme Courcier, 1819. 2 volumes in-4, basane racinée, smooth spine decorated, speckled edges (Binding of the period). First edition, decorated with a portrait of Gaspard Monge lithographed after Élise Bruyère and accompanied by an atlas of 60 plates engraved by Ambroise Tardieu. Binding a little rubbed, corners restored, some foxing.