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Humphrey Pump References

Over the years I have come across numerous references to the Humphrey Pump, the list below includes some of the more interesting ones.

P.D.Dunn, N.G.Joyce, D.J.Fulford, "The Humphrey Pump", A Report to the Ministry of Overseas Development, Department of Engineering and Cybernetics, University of Reading. January 1977.
Denis Smith, "The Humphrey Pump and its Inventor", Transactions of The Newcomen Society, Volume 43 (1970) 067-092.
James Ivey McLauchlan, "The Humphrey Pump and the Installation of two Sixty-six inch Units at Cobdogla, River Murray", Journal of the Institution of Engineers of Australia 3 (1931) 413-426
Engineering News, "A Humphrey Direct-Acting Explosion Pump for Irrigation Service at Del Rio, Texas", Vol 72, No 16, October 15th 1914.
Engineering News, "The Largest Pumping Plant in the World: a Great Humphrey Engine Pumping Plant for Land Drainage in Egypt", Vol 72, No 2, July 9th 1914.
The Engineer, "The New Reservoir at Chingford No III", March 28th 1913.
The Engineer, "The New Reservoir at Chingford No II", March 21st 1913.
The Engineer, "The New Reservoir at Chingford No I", March 14th 1913.
Rankin Kennedy, "The Book of Modern Engines", 1912 Volume V 1-16.
Engineering, "The Humphrey Pump at the Brussels Exhibition", July 22nd 1910.
Herbert A. Humphrey, "An Internal-Combustion Pump, and other applications of a new Principal". Proceedings of The Institution of Mechanical Engineers - 19th November 1909