John Jermyn Cowell, « The Graian Alps and Mount Iseran », dans Francis Galton (éd.), Vacation Tourists and Notes of Travel in 1860, Macmillan, (lire en ligne), p. 239-263
John Jermyn Cowell, « Two ascents of the Grand Paradis : A Series of Excursions by Members of the Alpine Club », dans Edward Shirley Kennedy (éd.), Peaks, Passes and Glaciers, vol. 2, Longman, Brown, Green, Longmans, and Roberts, (lire en ligne), p. 408-426
W. C. Lubenow, The Cambridge Apostles, 1820-1914: Liberalism, Imagination, and Friendship in British Intellectual and Professional Life, Cambridge University Press, 1998