Algernon Blackwood (2015). “Collected Works of Algernon Blackwood (Unabridged): 10 Novels & 80+ Short Stories: The Empty House and Other Ghost Stories, John Silence Series, Jimbo, The Willows, The Human Chord, The Education of Uncle Paul, The Wave, The Listener…”, p.2578, e-artnow
George Catlin (1857). “Illustrations of the Manners, Customs, and Condition of the North American Indians: With Letters and Notes Written During Eight Years of Travel and Adventure Among the Wildest and Most Remarkable Tribes Now Existing ; with 360 Engravings, from the Author's Original Paintings”, p.16