Alexander Gilchrist, The Life of William Blake, II, London, 1863, discussed under no. 62.
Geoffrey Keynes, Pencil Drawings by William Blake, London, 1927, XIVff.
Ryskamp, Charles, ed. Nineteenth Report to the Fellows of the Pierpont Morgan Library, 1978-1980. New York : Pierpont Morgan Library, 1981, p. 177-178.
William Blake, exhibition catalogue by Martin Butlin, Tate Gallery, London, 1978, 138ff., under no. 305.
Unused sketch for "The Pastorals of Virgil", adapted by Robert John Thornton, M.D., London, 1821.
Linnell, John, 1792-1882, former owner.
Insull, Samuel, Mrs., former owner.
Reed, H. W., Mrs., former owner.