ROC700096:
Studies of the nerves, muscles, the heart, optics and blood flow through the aortic valve, c.1512-13 (pen & ink with chalk on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
FAF3572618:
Study of shepherds for the Adoration of the Magi; pen drawing on white paper by Leonardo da Vinci preserved in the Wallraff-Richartz Museum in Cologne., Vinci, Leonardo da (1452-1519) / Bridgeman Images
FAF3572624:
Study of flowers, c. 1483 (pen, brown ink, mostly over a preceding sketch in metalpoint, paper slightly browned), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC6166217:
Recto: Studies of geometry, calculations, and notes, c.1508-10 (pen & ink on paper) (recto of 6166218), Vinci, Leonardo da (1452-1519) / Bridgeman Images
CPH256963:
Figural Studies for the Adoration of the Magi (Sketches for a Christ Child and Studies of a kneeling and a flying angel), c.1481 (pen & ink over metalpoint on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
XJF311684:
Sheet of studies of foot soldiers and horsemen in combat, and halbards, 1485-1488 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images