ROC5907190: An ox and ass, and other studies of asses, c.1478-80 (leadpoint, pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

FIA5328502: Virgin to the child with flower or Madone Benois (Madonna with a Flower or Madonna Benois), 1478 (oil on canvas), Vinci, Leonardo da (1452-1519) / State Hermitage Museum, St. Petersburg, Russia / Bridgeman Images

MEV5048012: Old Man in Profile, Vinci, Leonardo da (1452-1519) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

FAF3565876: Feminine head, drawing by Leonardo da Vinci. Gabinetto dei Disegni e delle Stampe, Uffizi Gallery, Florence, Vinci, Leonardo da (1452-1519) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

MEV5046803: Codex Atlanticus, sheet 806 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC700107: The bones and nerves of the arm, c.1485-90 (metalpoint and pen & ink on blue-grey paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC876574: Studies of the vessels of the body, and of staircases, c.1506-10 (pen & ink with red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3823036: Recto: Studies of human proportion, c.1490 (pen & ink on paper) (recto of 3823037), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5044309: Pictographs, c.1487-90 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5047418: Codex Atlanticus, sheet 1112 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046355: Codex Atlanticus, sheet 582 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046763: Codex Atlanticus, sheet 786 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046894: Codex Atlanticus, sheet 851 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC1763756: A design for a decorated cuirass, c.1478-80 (black chalk with pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5907184: Recto: A scheme for a canal to bypass the Arno, c.1503-04 (pen and ink and wash over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LLM2782720: King Francis I of France visiting Leonardo da Vinci at Clos Luce (chromolitho), European School, (19th century) / Private Collection / Bridgeman Images

MEV5045802: Codex Atlanticus, sheet 310 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045494: Codex Atlanticus, sheet 156 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046021: Codex Atlanticus, sheet 419 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045961: Codex Atlanticus, sheet 389 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047034: Codex Atlanticus, sheet 921 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046969: Codex Atlanticus, sheet 888 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045464: Codex Atlanticus, sheet 141 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045478: Codex Atlanticus, sheet 148 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045414: Codex Atlanticus, sheet 116 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046034: Codex Atlanticus, sheet 426 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045360: Codex Atlanticus, sheet 89 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045870: Codex Atlanticus, sheet 344 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045242: Codex Atlanticus, sheet 37 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045368: Codex Atlanticus, sheet 93 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045372: Codex Atlanticus, sheet 95 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046629: Codex Atlanticus, sheet 719 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045711: Codex Atlanticus, sheet 264 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045797: Codex Atlanticus, sheet 307 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047316: Codex Atlanticus, Sheet 1062 Recto, 1478-1519 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047374: Codex Atlanticus, sheet 1090 verso, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images