Watermark: none.
The catapult-like machine at the top of the page is for scaling towers while the machine below is designed to turn heavy beams during the construction of scaffolding.
Inscribed in pen and brown ink by the artist, in mirror writing, above upper design, "pie[na] dj fieno bagniato. / Strume[n]to dj urno / e da mare per i[s]calare una tore dj sopra esselle / fussino due torri va per tale linia chelluna facci scudo . allaltra ma / fa chel mare . sia cho[]tu / tj . i segnj dj tranqujlita"; for the device below, "questi buchi . voliano . essere dj pari alteza . a2. a2. / sotterra / Modo dj torciere vna trave per fare i chavalettj"; on verso, in pen and dark brown ink, by the Paris bookdealer Lefebvre, "Vendu par moi pour la somme de cent francs a Monsieur Picchioni ce dessin autogra/-phe de Leonard de Vinci, provenant de La Collection de M.r[superscript r] Garnier President du tribunal / de la Rochelle, et qui m'a été saisi par ordre de M.r[superscript r] hallon, juge d'instruction, il y a / environ un mois et rendu au bout de quelques jours / Paris ce 11 Juin 1849 Lefebvre / Libraire 9 rue rameau"; in another hand, possibly that of Stefan Zweig, "gut"; along right edge, in pen and brown ink, in a fifteenth century hand, "[...]".
Melzi, Francesco, 1491 or 1493-approximately 1570, former owner.
Garnier, Jacques, 1755-1818, former owner.
Lefebvre, former owner.
Picchioni, Luigi, former owner.
Libri, Guillaume, 1803-1869, former owner.
Morrison, Alfred, 1821-1897, former owner.
Fatio, Henry, former owner.
Kra, Simon, former owner.
Zweig, Stefan, 1881-1942, former owner.
Schilling, Edmund, 1888-1974, former owner.
Manley, Otto, -1989, former owner.
Rhoda Eitel-Porter and and John Marciari, Italian Renaissance Drawings at the Morgan Library & Museum, New York, 2019, no. 46.
Selected references: Morrison 1892, 6:325; Richter 1939, 2: no. 45; Steinitz 1948, 41; Richter 1970, 1: no. 50; De Toni 1975, 6-7; Pedretti 1977, no. 46; Pedretti 1988, 142- 43; Fellows Report 22 1989, 357-58; London 1989, no. 114; Florence 1992, no. 9.20; Pedretti and Trutty- Coohill 1993, no. 6; Scaglia 1995; Boston and Tübingen 1997, 146; New York 2002-3, no. 55; Matuschek 2005, no. 452; New York 2006, no. 6; Munich 2008-9, 13; Garton 2011, 159ff.; New York 2013-14, 61-62; Milan 2015, V1.15.
From Leonardo to Pollock: Master drawings from the Morgan Library. New York: Morgan Library, 2006, cat. no. 6, p. 14-15.
Ryskamp, Charles, ed. Twenty-First Report to the Fellows of the Pierpont Morgan Library, 1984-1986. New York : Pierpont Morgan Library, 1989, p. 357-358.