License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
José Guadalupe Posada. A snake with a woman's head slithering towards a scared man, an illustration from 'The Ballad of the Snake Woman' (reprinted 1930), ca. 1899 (a later impression). The Metropolitan Museum of Art.