1840
Hood, Thomas. "Miss Kilmansegg and Her Precious Leg." New Monthly Magazine, Oct. 1840 - Feb. 1841.
Hood, Thomas. "Miss Kilmansegg and Her Precious Leg." Selected Poems of Thomas Hood. Harvard University Press, 1970.
On the Catholic Church.
Macaulay, Thomas Babington. "Von Ranke." Edinburgh Review, Oct. 1840.
The Philosophy of the Inductive Sciences
Whewell, William. The Philosophy of the Inductive Sciences: Founded Upon Their History. Vol. 1, London: John W. Parker, 1840.
Whewell, William. The Philosophy of the Inductive Sciences: Founded Upon Their History. Vol. 1, Cambridge University Press, 2014.
Longfellow, Henry Wadsworth. "The Village Blacksmith." The Knickerbocker. New York City: Lewis Gaylord Clark, Nov. 1840, I. 1.
Longfellow, Henry Wadsworth. "The Village Blacksmith." Henry Wadsworth Longfellow: Poems & Other Writings, edited by J. D. McClatchy. Library of America, 2000, I. 1.
Carlyle, Thomas. Chartism. London: James Frases, 1840, ch. 6.
Carlyle, Thomas. "Chartism." Thomas Carlyle: Selected Writings. Penguin Classics, 2015.