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DIY Hacks & How To's: Make a 3D Viewer - YouTube
Studio 3D Stereoscopic Displays
Owl Viewer
Amazon | Great War in 3D: An Album of World War I, 1914 – 1918, with Stereoscopic Viewer and 35 Three-Dimensional Vintage Battlefront Photographs | Verney, Jean-Pierre, Stephenson, Michael | 20th Century
Stereography / 3D
London Stereoscopic Company - Official Web Site
Free-viewing 3D Parallel-view | ADCNJ's 3D Stereoscopic Gallery