License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Theodor Richard Edward von Holst. Gretchen in prayer before the Mater Dolorosa (recto). Studies of a Gretchen, a bearded male head, and other figures (verso), 1828–31. The Metropolitan Museum of Art.