[Circular letter to supporters of John Walker's London Vaccine Institution, emphasising the Society's disapproval of Walker and his activities. Begins] At a special Board of Directors of the Royal Jennerian Society, 23rd of March 1808.

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[Circular letter to supporters of John Walker's London Vaccine Institution, emphasising the Society's disapproval of Walker and his activities. Begins] At a special Board of Directors of the Royal Jennerian Society, 23rd of March 1808. Public Domain Mark. Source: Wellcome Collection.