A preparatory drawing for Le Sage's engraving, published in Gravures in 1788. Another drawing by Desprez for the same engraving in pen and watercolor is in the Musée Carnavalet, Paris, M.L. Levent, La Construction du pont Louis XVI à propos de quelques dons récents, Bulletin du Musée Carnavalet, June 1994, 1, pp. 9-13, illustrated