Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Westminster, City of]
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Chart showing Week by Week the Number of Cases of Small-Pox Notified by Medical Practitioners as having Occurred in the
County of London, 1901-1902.
(Reproduced by permission of the Editor of "Public Health)