GIA4794254:
Study of boat equipped with a series of oars by Leonard de Vinci (Leonardo da Vinci) (1452 - 1519). Drawing with pen and ink. Manuscript. Library of the Institut de France. Paris., Vinci, Leonardo da (1452-1519) / Bridgeman Images
FAF3729807:
Codex Forster III, f.72r, reflections and notes on physics, c.1490-93 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Bridgeman Images