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Consul the Educated Monkey, or the inventions of William H. Robertson | National Museum of American History
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Consul der Rechenaffe - the Educated Monkey Consul | Blechfabrik English
What 'Consul, the Educated Monkey' Can Teach Us about Early-Twentieth-Century Mathematics, Learning, and Vaudeville (Chapter 11) - The Whipple Museum of the History of Science
The Educated Monkey Calculator - An original vintage wind-up toy
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