Broad Street (latterly Broadwick Street), Soho, with a white silhouette replica of the Broad Street pump identifed by John Snow as a source of cholera-infected water. Photograph.

Licence: Public Domain Mark

Credit: Broad Street (latterly Broadwick Street), Soho, with a white silhouette replica of the Broad Street pump identifed by John Snow as a source of cholera-infected water. Photograph. Wellcome Collection. Source: Wellcome Collection.