1 янв 1838 г. - Stereograph

Описание:

Invented in 1838. The stereograph, otherwise known as the stereogram, stereoptican, or stereo view, was the nineteenth-century predecessor of the Polaroid, with an imaginative flair. Placed on cardboard were two almost identical photographs, side by side, to be viewed with a stereoscope. They were most popular between 1870 and 1920.
source: www.americanantiquarian.org/stereographs.htm

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