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 male skeleton leading a female skeleton to the left, from a broaside entitled 'La Calavera de Cupido', published by Antonio Vanegas Arroyo., ca. 1892. The Metropolitan Museum of Art.