1. “The aquativ vivarium at the Zoological Gardens, Regent’s Park.” Illustrated London News. 28 May 1853.
2. Benjamin, Walter. Selected Writings, vol. 2, Part 2, 1931–1934. In edited by Michael W. Jennings, Howard Eiland and Gary Smith, Translated by Rodney Livingstone and others. Cambridge, MA: Harvard University Press, 1999.