Quercus ilex - Oak oak, Illustration of the branch of a holm oak from the 19th century, signed: Ruprich Robert inv. Et del, Sauvageot sc., Pl. 45, after p. 145, Ruprich-Robert, V. (inv. et del.); Sauvageot, Cl. (sculp.), 1876, V. Ruprich-Robert, Cl. Sauvageot: Flore ornementale: essai sur la composition de l'ornement: éléments tirés de la nature et principes de leur application. Paris: Dunod, 1876.
Quercus ilex - Oak oak, Illustration of the branch of a holm oak from the 19th century, signed: Ruprich Robert inv. Et del, Sauvageot sc., Pl. 45, after p. 145, Ruprich-Robert, V. (inv. et del.); Sauvageot, Cl. (sculp.), 1876, V. Ruprich-Robert, Cl. Sauvageot: Flore ornementale: essai sur la composition de l'ornement: éléments tirés de la nature et principes de leur application. Paris: Dunod, 1876