1857, 21 November
Advert for "Just published, Part I, price 3s, The wonders of the microscope photographically revealed, by means of Olley's patent micro-photographic reflecting process. W. Kent and Co., Publishers, Paternoster-row."

Advert
Internet - Original source ill-defined
The Lancet - The Lancet General Advertiser. - November 21, 1857. - No. XXI. Vol. II. 1857
 
LL/126437