1. Anon, J. F.W. 1840. The camera lucida.AthenaeumNo. 148, 28 August 1840, p. 540
2. Atkins, A. 1843.British Algae, Cyanotype Impressions1843–1853. Halstead Place, Sevenoaks. Privately printed, 3 vols
3. Cook, E. T. 1908.1The Works of John Ruskin,, Library edition Vol. 5, 455London: George Allen.
4. The radiant heat spectrum from herschel to melloni.—I. The work of herschel and his contemporaries