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
George R. R. Martin (2011). “A Game of Thrones 4-Book Bundle: A Song of Ice and Fire Series: A Game of Thrones, A Clash of Kings, A Storm of Swords, and A Feast for Crows”, p.155, Bantam