Nicolai Abildgaard (1743–1809): Fingal Sees the Ghosts of his Forefathers by Moonlight, ca. 1782, 60.4 x 72.2 x 5.1 cm, oil on canvas, source: Statens Museum for Kunst / National Gallery of Denmark, KMS3986, http://www.smk.dk/en/explore-the-art/search-smk/#/detail/KMS3986. Public Domain.