Letter from Allan Wyon, 287 Regent Street, London, to John Evans, Treasurer of the Royal Society Wyon informs he has 'made a drawing for the reverse of the Medal about to be founded by the Royal Society in memory of Charles Darwin', which he hopes will be approved. He sends a sketch which suggests the placement of the lettering [not enclosed], and remarks on the 'charge for the pair of dies'. 17 April 1890