References for John Hopkinson

1. B Dibner, Biography in Dictionary of Scientific Biography (New York 1970-1990).
   http://www.encyclopedia.com/doc/1G2-2830902050.html
2. Biography by T H Beare, rev. S Hong, in Dictionary of National Biography (Oxford, 2004).
3. Biography in Encyclopaedia Britannica.
   http://www.britannica.com/EBchecked/topic/271565/John-Hopkinson

Books:

4. B Hopkinson (ed.), The complete works of John Hopkinson (Cambridge, 1901).
5. J Greig, Biography of John Hopkinson, Engineering (13 Jan 1950).
6. B Hopkinson, Memoir, in Original papers of John Hopkinson 1 (1901), x-lxi.

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