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jstor.org
Jenkins, Ian (1990). "Acquisition and Supply of Casts of the Parthenon Sculptures by the British Museum, 1835–1939". Annual of the British School at Athens. 85: 89–114. doi:10.1017/s0068245400015598. JSTOR30102843. S2CID193237324.
John Malden, 'Henning, John (1771–1851)’, Oxford Dictionary of National Biography, Oxford University Press, Sept 2004; online edn, Jan 2008 accessed 10 June 2010
semanticscholar.org
api.semanticscholar.org
Jenkins, Ian (1990). "Acquisition and Supply of Casts of the Parthenon Sculptures by the British Museum, 1835–1939". Annual of the British School at Athens. 85: 89–114. doi:10.1017/s0068245400015598. JSTOR30102843. S2CID193237324.