In the 1890s, a young scientist used a concealed spy camera to take secret street photographs

In the 1890s, a young scientist used a concealed spy camera to take secret street photographs Find out more: http://imgur.com/gallery/f8zlT https://www.nehans.net/in-the-1890s-a-young-scientist-used-a-concealed-spy-camera-to-take-secret-street-photographs/