John Campbell

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Oxford Biography Index entry

John Campbell

Campbell, John, fourth earl of Loudoun (1705–1782), army officer

Oxford Biography Index Number 101004516 [what is this?]
http://www.oxforddnb.com/index/101004516/John-Campbell Primary authority: Oxford DNB

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Oxford Dictionary of National Biography

Stephen Brumwell, ‘Campbell, John, fourth earl of Loudoun (1705–1782)’, first published 2004; online edn, Jan 2008, 927 words, with portrait illustration

http://dx.doi.org/10.1093/ref:odnb/4516

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American National Biography

http://www.anb.org/articles/03/03-00597.html

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