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Credit
A large dog, emerging from the water, with the head of the Duke of Wellington, and a smaller dog with the head of Lord John Russell, both tug a stick inscribed "committee Ireland", while John Bull and Daniel O'Connell, the respective owners, are waiting in the background. Coloured lithograph by H.B. (John Doyle), 1839. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.