This file is a stereogram. Stereograms are stereoscopic images or animations which combine left and right frames showing slightly different visual angles to allow for 3D perception.
The stereogram uses the side-by-side method. It has not been indicated which frame shows which eye's respective angle. It is either unknown or the image is made to be usable with both parallel and cross viewing. (If the image is not intentionally reversible, please correct this template by changing the first/method parameter to either "parallel" or "cross".) It might be possible to view this image without a viewing device by either diverging or crossing your eyes to visually combine the frames, or a stereoscope may be used.
Summary
DescriptionWilliamsburg Bridge in 3D, c1905 (8156687554).jpg
English: I picked this up because the bridge was designed by Leffert Lefferts Buck, a childhood friend of Virgil Bogue. Some day I'll write a book about Bogue and his Plan of Seattle.
Scanned from an old stereoscope card.
NOTE: From a set of public domain images collected by Rob Ketcherside. He applied a CC license on Flickr because Flickr does not offer a PD option.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Williamsburg_Bridge_in_3D,_c1905_(8156687554).jpg
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https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue