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Rare Book Division, The New York Public Library. "He gives one convulsive leap in the centre of the circle, ..." The New York Public Library Digital Collections. 1860 - 1861. https://qa-digitalcollections.nypl.org/items/510d47db-c870-a3d9-e040-e00a18064a99
Rare Book Division, The New York Public Library. "He gives one convulsive leap in the centre of the circle, ..." New York Public Library Digital Collections. Accessed January 6, 2025. https://qa-digitalcollections.nypl.org/items/510d47db-c870-a3d9-e040-e00a18064a99
Rare Book Division, The New York Public Library. (1860 - 1861). He gives one convulsive leap in the centre of the circle, ... Retrieved from https://qa-digitalcollections.nypl.org/items/510d47db-c870-a3d9-e040-e00a18064a99
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He gives one convulsive leap in the centre of the circle, ..., (1860 - 1861)|author=Digital Collections, The New York Public Library |accessdate=January 6, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>