File:PSM V51 D822 Telescope at yerkes observatory.jpg

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Description Telescope at Yerkes observatory
Date
Source Popular Science Monthly Volume 51
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to grayscale, cropped whitespace. Modifications made by Ineuw. The original can be found here: Popular Science Monthly Volume 51.

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current18:56, 5 May 2011Thumbnail for version as of 18:56, 5 May 20112,077 × 2,616 (639 KB)Ineuw{{Information |Description = Telescope at Yerkes observatory |Source = [ttp://www.archive.org/details/appletonspopular51youmrich Popular Science Monthly Volume 51] |Date = 1897 |Author = Unknown |Permission = {{PD-old

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