License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Zakaria bin Muhammad bin Mahmud Abu Yahya Qazwini. "The Tortoise", Folio from an `Aja'ib al-Makhluqat (Wonders of Creation) of Qazwini, second half 16th century. The Metropolitan Museum of Art.