FAF3565861: Dragon killing a lion, drawing by Leonardo da Vinci. Gabinetto dei Disegni e Stampe, Uffizi Gallery, Florence, Vinci, Leonardo da (1452-1519) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

XIR161930: Figural Studies for the Adoration of the Magi, c.1481 (pen & ink and metalpoint on paper), Vinci, Leonardo da (1452-1519) / Musee Bonnat, Bayonne, France / Bridgeman Images

XIR16827: Francis I, King of France, with Leonardo da Vinci, receiving a painting of the Holy Family sent from Rome by Raphael, 1814 (oil on canvas), Lemonnier, Anicet-Charles (1743-1824) / Musee des Beaux-Arts, Rouen, France / Bridgeman Images

RTR5315930: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 17 recto, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

PWI108517: Detail of the Virgin and St. Anne from The Virgin and Child with St. Anne, c.1510 (oil on panel), Vinci, Leonardo da (1452-1519) / Louvre, Paris, France / Bridgeman Images

RTR5315968: Studies of assault tanks with scythes, c. 1485 (pen and brown ink with traces of metallic tip on paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

MEV5047589: De Divina Proportione, Figure XX, sheet 101 recto: Elevated empty octahedron, Octocedron elevatvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

RTR5315934: Bird Flight Code, c. 1505-06, paper manuscript, cc. 18, Cover III, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

LRI4607443: La Belle Ferronniere. (oil on wood, 1490), Vinci, Leonardo da (1452-1519) / Louvre, Paris, France / Bridgeman Images

MEV5046729: Codex Atlanticus, sheet 769 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

LLM670013: Leonardo Da Vinci (engraving), English School, (19th century) / Private Collection / Bridgeman Images

MEV5047585: De Divina Proportione, Figure XVI, sheet 99 recto: Perpendicular empty octahedron, Octocedron planvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047590: De Divina Proportione, Figure XXI, sheet 101 verso: Perpendicular solid icosahedron, Ycocedron planvs solidvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047597: De Divina Proportione, Figure XXVIII, sheet 105 recto: Perpendicular empty dodecahedron, Dvodecedron planvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

JLJ4687559: Wing training. Flying machine drawing. Manuscript by Leonard De Vinci (Leonardo da Vinci, 1452-1519), 16th century. Paris, Library of the Institute, Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

ELC850944: Equestrian Monuments Statue of Francesco Sforza (Monumento equestre a Francesco Sforza), from Leonardo da Vinci, 20th Century, bronze, Vinci, Leonardo da (1452-1519) / Bridgeman Images

MEV5047122: Codex Atlanticus, sheet 965 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045177: Codex Atlanticus, sheet 6 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

RTR5315919: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 11 verso, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

BMR214060: Res 4720 The letter 'A', illustration for 'De Divina Proportione' by Luca Pacioli (1445-1517), 1509 (lithograph), Vinci, Leonardo da (1452-1519) / Bibliotheque Mazarine, Paris, France / Bridgeman Images

RTR5315959: Virile head of profile crowned with laurel, c. 1506-10 (blood with contours recrossed in pen on white paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

JLJ4687574: Flying machine drawing. Manuscript by Leonard De Vinci (Leonardo da Vinci, 1452-1519), 16th century. Paris, Library of the Institute, Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

MEV5045308: Codex Atlanticus, sheet 70 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

RTR5315933: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 18 verso, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

FTB165451: Virgin and Child with St. Anne, c.1501-10 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

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

LAL304223: When They Were Young: Leonardo da Vinci, Jackson, Peter (1922-2003) / Private Collection / Bridgeman Images

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

FAF3566085: Head of a young man; drawing by Leonardo da Vinci. The Louvre, Paris, Vinci, Leonardo da (1452-1519) / Louvre, Paris, France / Bridgeman Images

CH827893: Drapery Study for a kneeling figure, (brush and brownish-grey distemper heightened with white on linen), Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

FAF3565853: Head of a young woman, drawing by Leonardo da Vinci, Gabinetto dei Disegni e Stampe, Uffizi, Florence, Vinci, Leonardo da (1452-1519) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

MEV5046908: Codex Atlanticus, sheet 858 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046866: Codex Atlanticus, sheet 837 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

FAF3565936: Study for the Angel of the Virgin of the Rocks, by Leonardo da Vinci (1452-1519), c. 1478-1485 (metalpoint heightened with white on prepared paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

FAF3566007: Study for the head of a saint, drawing by Leonardo da Vinci. Gallerie dell'Accademia, Venice, Vinci, Leonardo da (1452-1519) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

RTR5315956: Three views of manly head with beard, c. 1502 (blood on paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images