File:Pump Handle - John Snow .jpg - Wikipedia

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Broad Street Cholera Pump – London, England - Atlas Obscura

Broad Street Cholera Pump – London, England - Atlas Obscura

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Return of the John Snow Water Pump

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John Snow - Wikipedia

1854 Broad Street cholera outbreak - Wikipedia

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Return of the John Snow Water Pump

Return of the John Snow Water Pump

Mapping disease: John Snow and Cholera — Royal College of Surgeons