ROC441196:
Two sketches of nude men seen from the front and behind, c.1506 (pen & ink with black chalk on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC700094:
Drawings of blood flow and eddies of blood in the heart, c.1512-13 (pen & ink on blue paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
CPH256958:
Page from a notebook showing figures fighting on horseback and on foot (sepia ink on linen paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC3740755:
A study for a Nativity, and architectural studies, c.1485 (metalpoint, much faded, and pen and ink on pale blue prepared paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC5674271:
Recto: The ventricles, papillary muscles and tricuspid valve, c.1511-13 (pen & ink on blue paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images