ROC409849: The arm of the Virgin, c.1508-10 (black & red chalks, pen, brush and ink heightened with white on red paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / 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

ROC615079: The Heart, lungs and other organs, c.1508 (pen & ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

AII80164: Study of Two Heads in Profile and Studies of Machines (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

XEE4404978: Portrait of Leonard de Vinci (1452-1519) (Leonardo da Vinci), Italian painter., Unknown Artist, (19th century) / Private Collection / Bridgeman Images

FIA5399582: Study of Two Warriors' Heads for the Battle of Anghiari, 1504-05 (black chalk and sanguine on paper), Vinci, Leonardo da (1452-1519) / Museum of Fine Arts (Szepmuveszeti) Budapest, Hungary / Bridgeman Images

ROC3703868: Studies of drapery for a Salvator Mundi, c.1504-8 (red chalk with pen and ink and white heightening on pale red prepared paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC399226: Studies of horses and soldiers for the 'Battle of Anghiari', c.1503-04 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / 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

ROC399241: The bust of a grotesque old woman, c.1510-20 (chalk on paper), Vinci, Leonardo da (1452-1519) (after) / Royal Collection Trust / Bridgeman Images

MEV5047605: De divina proportione. Figure XXXVI, sheet 109 recto: Perpendicular empty body with twenty-six bases, rhombicuboctahedron, Vigintisex basivm planvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045175: Codex Atlanticus, sheet 5 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC399224: Horses, St. George and the Dragon, and a lion, c.1517-18 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC489436: A Map of the Pontine marshes, 1515 (pen & ink with wash, gouache & chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3955998: The rivers and mountains of central Italy, c.1502-4 (pen and ink, and brown and blue wash, over black chalk), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC399276: The Skeleton, c.1510 (pen & ink with wash over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC399275: The veins and muscles of the arm, c.1510 (pen & ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

BIF181081: Paris Manuscript E, fol. 22v and 23r: Sketch of the flight of birds, 1513-14 (pencil on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

XAL291495: Drapery study for a kneeling figure in Profil Perdu to the right, c.1472-75 (brush & grey tempera with white on canvas), Vinci, Leonardo da (1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

GIA4794210: War machine: Catapult study by Leonard de Vinci (Leonardo da Vinci) (1452 - 1519)., Vinci, Leonardo da (1452-1519) / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

BIF39645: Vertically Standing Bird's-winged Flying Machine, fol. 80r from Paris Manuscript B, 1488-90 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

XBP341803: A page from the Codex Leicester, 1508-12 (sepia ink on linen paper), Vinci, Leonardo da (1452-1519) / Private Collection / 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

XEE4410644: Portrait of Leonardo da Vinci, Unknown Artist, (19th century) / Private Collection / Bridgeman Images

LRI4572936: Adoration of the Magi - oil on wood, 1481-1482, Vinci, Leonardo da (1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

BIF162317: Paris Manuscript B, fol. 83v: Page of text and sketches for a flying machine, 1488-90 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / 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

ROC4473168: The head of a youth in profile, c.1517-18 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC478417: A tree, dandelions and rushes, c.1510 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XEE4145196: Portrait of Leonardo Da Vinci (Leonard de Vinci) (1452 - 1519) from his self-portrait., Anonymous / Private Collection / Bridgeman Images

OLA235960: Reconstruction of da Vinci's design for an automobile (wood), Vinci, Leonardo da (1452-1519) (after) / Istituto e Museo di Storia della Scienza, Florence, Italy / Bridgeman Images

AND2916293: Divina Proportione (engraving), Vinci, Leonardo da (1452-1519) / The University of St. Andrews, Scotland, UK / Bridgeman Images

MEV5045173: Codex Atlanticus, sheet 4 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC443714: The head of a youth in profile, c.1510 (chalk on red paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF311691: Study for a Madonna with a Cat, c.1478-80 (pen and ink over stylus underdrawing on paper), Vinci, Leonardo da (1452-1519) / British Museum, London, UK / Bridgeman Images

ROC3899937: UV image of studies of hands, c.1480 (metalpoint, much faded, on pink prepared paper) (see also 3899938), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images