License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Carl Gustaf Fehrman. Gustavus III, King of Sweden (b. 1746, r. 1771–92) and Louise Ulrika, his mother (1720–1782), as founders of the Swedish Academy, 1786. The Metropolitan Museum of Art.