Bell's Classical Arrangement of Fugitive Poetry, Volume 4, London 1789, Epistle IV, pp.35–8
Francis Grose, The Antiquities of England and Wal, London 1784, vol.3, p.168
Stephen Copley, "Tourists, Tintern Abbey and the Picturesque", in Imprints & Re-visions: The Making of the Literary Text, 1759–1818, Gunter Narr Verlag, 1996, pp.61–2
Travel Writing and Tourism in Britain and Ireland , Palgrave Macmillan 2012; C.S.Matheson, Ch.3 "'Ancient and Present', Charles Heath of Monmouth", pp.50–67
Clark 1979, p. 90. Clark, Arthur (1979). The Story of Monmouthshire, Volume 1, From the earliest times to the Civil War. Monmouth, Wales: Monnow Press. ISBN9780950661810. OCLC866777550.