Royalty, Espionage, and Erotica: Secrets of the World's Tiniest Photographs...
Almost as soon as photography was invented, the fi... ...opular among the general public when the Stanhope lens , a tiny magnifying glass, was developed. Beginning in the mid-19th c... ...ning in the mid-19th century, the photographs and lenses were embedded into everyday obje...
https://www.neatorama.com/2014/12/03/Royalty-Espionage-and-Erotica-Secrets-of-the-Worlds-Tiniest-Photographs/
