1. Accounts of Travel, 2013–16. European Travellers to Wales, 1750–2010. Edited by Rita Singer, Kathryn N. Jones, Carol Tully and Heather Williams. Accessed November 13, 2021. http://etw.bangor.ac.uk/about-database.
2. Clericus Cambrensis (pseud. Joseph Charles Edwards). 1855. “Can a Jew Sit in Parliament?” Why Not? A Letter to a Brother Clergyman. London: Houlston and Stoneman.
3. Curious Travellers, 2015–20. “Curious Travellers.” Edited by Mary-Ann Constantine et al. https://curioustravellers.ac.uk/en/.