Windsor collection
These drawings are to be found in Windsor and are property of Her Majesty Queen Elisabeth II. They comprise approximately 600 unbound drawings of various sizes. They concern anatomy and geography, horse studies, drawings, caricatures and a series of maps. The drawings belong to different periods in the life of Leonardo, roughly between 1478 and 1518. Many of the come from the collection of Pompeo Leoni, who separated them from the technical drawings that are now in the Codex Altlanticus.