357px-Manuscript_Illumination_with_Singing_Monks_in_an_Initial_D,_from_a_Psalter_MET_sf12-56-4s1

By Girolamo dai Libri – This file was donated to Wikimedia Commons as part of a project by the Metropolitan Museum of Art. See the Image and Data Resources Open Access Policy, CC0, https://commons.wikimedia.org/w/index.php?curid=60903792