RTR5315966:
Study of insects, c. 1480 (top drawing) and c. 1503-1505 (bottom drawing) (pen and ink on prepared paper of red, drawings cut out and glued), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC1763757:
A lion's head, a helmet surmounted by a lion's head, and geometrical studies, c.1508-10 (black chalk on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC5890579:
Verso: A town wall being blown up, c.1485 (pen & ink over metalpoint on blue prepared paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC5907188:
Verso: Studies of a water-clock, decorative costume etc., c.1506-10 (pen & ink, black chalk and stylus on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images
COU5934467:
Studies for Saint Mary Magdalene, c.1480-82 circa (pen & brown ink on paper; later framing line in pencil, partially trimmed), Vinci, Leonardo da (1452-1519) / Bridgeman Images
ROC7064923:
Recto: Studies of mechanics and anatomy, and notes on painting, c. 1510-13 (pen and ink), Vinci, Leonardo da (1452-1519) / Bridgeman Images