George Catlin (1841). “The Manners, Customs, and Condition of the North-American Indians, by Geo. Catlin: With Four Hundred Illustrations, Etched and Outlined, from His Original Paintings Now Exhibiting in His Indian Museum, Egyptian Hall, London”, p.46
James Boswell (1863). “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.54