| Photo | Link description |
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| http://www.prokudin-gorsky.ru | In the late 19th - early 20th century photographers in a number of countries used triple color technique for capturing color images. A camera registered on a single glass plate three sepatate black and white frames taken through the blue, green and red filters... World 1900-1917yy in color! | | http://photoarchive.spb.ru | |
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