Map Showing Recorded Dates of Influenza Epidemic in 1889 and 1890

<p>From <em>Report on the Influenza Epidemic of 1889–90</em> by Dr. Henry Parsons (1846–1913), London : Printed for Her Majesty's Stationery Office by Eyre & Spottiswoode, 1891.</p>

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<p>(courtesy <a href="https://wellcomecollection.org/works/wnk6ynud">Wellcome Collection</a>, <a href="https://creativecommons.org/licenses/by/4.0/">attribution 4.0 International (CC BY 4.0)</a>)</p>