Image:MtWilsonGlass-1917.jpg

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Description	The 100-inch glass being taken up for the en:Mount Wilson Observatory.
Source	Courtesy of the en:Los Angeles Public Library's Photo Collection.
Date	1917
Author	Courtesy of the Los Angeles Public Library
Permission (Reusing this image)	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1923. See this page for further explanation. Deutsch | English | Español | Français | Gaeilge | Galego | Italiano | Nederlands | ‪中文(简体)‬ | +/- This image might not be in the public domain outside of the United States (this especially applies in Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, and Switzerland). The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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