James Boswell, Samuel Johnson, Edmond Malone (1824). “The life of Samuel Johnson, LL. D., comprehending an account of his studies, and numerous works, in chronological order: a series of his epistolary correspondence and conversations with many eminent persons; and various original pieces of his composition, never before published; the whole exhibiting a view of literature and literary men in Great Britain, for near half a century during which he flourished”, p.23
Benjamin Franklin, Edmund Sears Morgan (2007). “Not Your Usual Founding Father: Selected Readings from Benjamin Franklin”, p.142, Yale University Press
B. L. Rayner, Thomas Jefferson (1834). “Life of Thomas Jefferson: with selections from the most valuable portions of his voluminious and unrivalled private correspondence : with portrait”, p.423