xAlison Chapman (ed.) and the DVPP team, “Gibson’s Studio. On the basso relievo of The Hours Leading the Horses of the Sun,
and on other works there,” Digital Victorian Periodical Poetry Project, Edition 0.98.9beta, University of Victoria, 18th March 2024, https://dvpp.uvic.ca/alltheyearround/1866/pom_3209_gibsons_studio_on_the_basso.html.