License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Honoré Daumier. 5 o'clock on June 30th, from 'The public at the exhibition,' published in Le Petit Journal pour Rire, June 25, 1864, June 25, 1864. The Metropolitan Museum of Art.