xAlison Chapman (ed.) and the DVPP team, “Helen’s Tower, Erected by Lord Dufferin, in Honour of His Mother, at Clandeboye, Ireland,” Digital Victorian Periodical Poetry Project, Edition 0.98.9beta, University of Victoria, 18th March 2024, https://dvpp.uvic.ca/macmillan/1863/pom_13907_helens_tower_erected_by_lord.html.