Alcatras Island San Francisco Stereoview c1880 Bay Shore Fort Point Gate A2176 For Sale

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Alcatras Island San Francisco Stereoview c1880 Bay Shore Fort Point Gate A2176:
$25.46

This is a stereoview (also known as a stereograph or stereoscope card). It was one of the first forms of 3D photography. The images were captured with a special stereoscopic camera, which had two lenses - simulating the view of our left and right eyes. The two, nearly identical pictures were then mounted next to each other (most commonly on a piece of cardstock, glued on as photographs or printed as lithographs). The image could then be seen in three dimensions when viewed through a device known as a stereoscope, stereopticon, televiewer and/or realisticscope.

Standard-size stereograph, measuring about 3.5 x 7 inches.

Alcatras Island San Francisco Stereoview c1880 Bay Shore Fort Point Gate A2176

$25.46

Old Postcard - Alcatras Island - San Francisco CA

$4.75

1973 Press Photo San Francisco school children touring prison on Alcatras Island

$19.99