STC740321: Frontispiece, from 'Divina Proportione' by Luca Pacioli (c.1445-1517), originally pub. Venice, 1509 (colour litho), Vinci, Leonardo da (1452-1519) (attr.to) / Private Collection / Bridgeman Images

GIA4811167: Model of the air screw made from the drawing of Leonardo da Vinci (Leonardo da Vinci), flying machine, helicopter ancestor - Museum of Science and Technology of Leonardo da Vinci, Milan, Vinci, Leonardo da (1452-1519) (after) / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

XOS3959941: Saint John the Baptist, 1505-07 (oil on poplar wood), Vinci, Leonardo da (1452-1519) (studio of) / Kunstmuseum, Basel, Switzerland / Bridgeman Images

AII143388: Detail of the Dragon from the drawing Fight between a Dragon and a Lion (brown ink with wash on paper), Vinci, Leonardo da (1452-1519) (school of) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

ROC3899942: Verso: The foetal blood supply of the cow, c.1508 (pen & ink on paper) (verso of 3899941), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427432: Study for an equestrian monument, c.1517-18 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427435: Job's tears, c.1510 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XOS3432851: Head of Virgin, 1508-1512 (black chalk, charcoal, and red chalk, with some traces of white chalk on card), Vinci, Leonardo da (1452-1519) / Metropolitan Museum of Art, New York, USA / Bridgeman Images

ROC399270: The muscles of the leg and the intercostal muscles, c.1510 (pen & ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

IMO2070794: The Last Supper, 1495-97 (fresco), Vinci, Leonardo da (1452-1519) / Museo del Cenacolo Vinciano, Santa Maria delle Grazie (Museum of the Last Supper), Milan, Italy / Bridgeman Images

MEV5045460: Codex Atlanticus, sheet 139 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC5455483: The heart compared to a seed, c.1508 (pen & ink and chalk on paper) (recto of 5455484), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892743: Verso: The mechanics of the arm in man and monkey, c.1508 (pen & ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC700110: The brachial plexus, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF311686: Fol.145v-b, page from Da Vinci's notebook (pen & ink on paper), Vinci, Leonardo da (1452-1519) / British Museum, London, UK / Bridgeman Images

ROC5455482: The bone and vessels of the thigh, c.1508-10 (pen & ink and chalk on paper) (verso of 5455481), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892725: Six studies of the bones and muscles of the arm, c.1508-10 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892736: Recto: The muscles of the leg, c.1510-11 (black chalk, pen & ink, wash on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

BIF161926: Study of the different Aerodynamic qualities of varying forms with a sketch of a Man and two Birds, Ms 7 (brown chalk on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

ROC700101: Study of the Larynx, trachea, oesophagus and stomach, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LRI4635228: Geometry: “” An Icosahedron”” Page taken from the manuscript “” De divina proportione”” (On divine proportions) by mathematician Fra Luca Pacioli dit Luca di Borgo (1445-1517) illustrated by Leonardo da Vinci (1452-1519).1509., Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

ROC5674283: Recto: The torso and leg of a nude man in profile, and a study of machinery, c.1488-90 (pen & ink over traces of black chalk on paper) (recto of 5674284), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC412170: Studies of flowing water, c.1510-13 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC437790: The principal organs and vessels of a woman, c.1510 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC489435: The Leg Sectioned, c.1485 (pen & ink over metalpoint on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XBP341805: A page from the Codex Leicester, 1508-12 (sepia ink on linen paper), Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

MEV5045710: Codex Atlanticus, sheet 264 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045306: Codex Atlanticus, sheet 69 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046685: Codex Atlanticus, sheet 747 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047357: Codex Atlanticus, sheet 1082 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046882: Codex Atlanticus, sheet 845 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC3931872: A standing masquerader, c.1517-18 (black chalk, pen & ink and wash on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5045496: Codex Atlanticus, sheet 157 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC5669155: A bust of a child from the front and back, c.1500 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892735: Verso: The muscles of the lower leg, c.1510-11 (pen and ink over traces of black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892753: Recto: The bladder, c.1508 (traces of black chalk, pen and ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images