Lydekker, Richard (). The Ears as a Race-Character in the African Elephant. Proceedings of the General Meetings for Scientific Businesses of the Zoological Society of London. L.: Messrs. Longman, Green, and Co. p.1-446 (ianuarie-aprilie).
Bondeson, 1999, pp. 104—105: «Editor’s compliments. All British children distressed at elephant’s departure. Hundreds of correspondents beg us to inquire on what terms you will kindly return Jumbo» Bondeson, Jan (). „Jumbo, King of Elephants”. The Feejee Mermaid and Other Essays in Natural and Unnatural History. Ithaca; Londra: Cornell University Press. p.96-130. ISBN0-8014-3609-5. Accesat în .
Bondeson, 1999, pp. 104—105: «My compliments to Editor, Daily Telegraph and British nation. Fifty millions of American citizens anxiously await Jumbo’s arrival. My forty years’ invariable practice of exhibiting the best that money could produce makes Jumbo’s presence here imperative» Bondeson, Jan (). „Jumbo, King of Elephants”. The Feejee Mermaid and Other Essays in Natural and Unnatural History. Ithaca; Londra: Cornell University Press. p.96-130. ISBN0-8014-3609-5. Accesat în .
Bondeson, 1999, p. 115: «His trunk is the size of an adult crocodile, his tail is as big as a cow’s leg, and he makes footsteps in the sand of time resembling an indention as if a very fat man had fallen off a very high building» Bondeson, Jan (). „Jumbo, King of Elephants”. The Feejee Mermaid and Other Essays in Natural and Unnatural History. Ithaca; Londra: Cornell University Press. p.96-130. ISBN0-8014-3609-5. Accesat în .
Bondeson, 1999, p. 117: «The Towering Monarch of his Mighty Race, the Colossus of Elephants, The Biggest and Most Famous Animal in the World, ridden upon by Queen Victoria, the Royal Family, and more than a million Children — just arrived from the Royal Zoological Gardens, London— JUHUMBO!» Bondeson, Jan (). „Jumbo, King of Elephants”. The Feejee Mermaid and Other Essays in Natural and Unnatural History. Ithaca; Londra: Cornell University Press. p.96-130. ISBN0-8014-3609-5. Accesat în .
Wilson, 2002: «…reached out his long trunk, wrapped it around the trainer and then drew him down to where that majestic head lay blood stained in the cinders. Scotty cried like a baby. Five minutes later, they lifted him from the lifeless body… That night Scotty laid down beside the body of his friend» Wilson, Susan (). „An Elephant's Tale”. Tufts Magazine. 9 (3 (Spring)). ISSN1074-843Verificați valoarea |issn= (ajutor).
Wilson, 2002: «…reached out his long trunk, wrapped it around the trainer and then drew him down to where that majestic head lay blood stained in the cinders. Scotty cried like a baby. Five minutes later, they lifted him from the lifeless body… That night Scotty laid down beside the body of his friend» Wilson, Susan (). „An Elephant's Tale”. Tufts Magazine. 9 (3 (Spring)). ISSN1074-843Verificați valoarea |issn= (ajutor).
