England: The Broad Street Pump - You Know Nothing, John Snow - Extra History - Part 1
Why the open web links it
John Snow's investigation into the Broad Street Pump helped establish the link between contaminated water and cholera outbreaks.
Linked by 6 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including mathworks.com, scienceblogs.com, respectfulinsolence.com, cambridge-water.co.uk, cashmerehighlibrary.com.