Dr John Snow (1813-1858) Founding father of Epidemiology. In 1854 his research linked deaths to the water pump near this site and thus determined that cholera is a water borne disease

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Broadwick Street, London
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by Royal Society of Chemistry on 16 June 2008

Colour: blue

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See also...
Simon Harriyott on Flickr
Keith Seabridge on Flickr