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File:Yerkes Observatory Astro4p6.jpg

Yerkes_Observatory_Astro4p6.jpg ‎(450 × 354 pixels, file size: 21 KB, MIME type: image/jpeg)

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Description Alvan Graham Clark and his assistant Carl Lundin (right) alongside of the 40-inch Lens.
Date
Source Astronomy and Astrophysics Yerkes Observatory
Author Photo Credit: Yerkes Observatory
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current08:07, 30 May 2008Thumbnail for version as of 08:07, 30 May 2008450 × 354 (21 KB)CarolSpears (talk | contribs){{Information |Description=Alvin Clark and his assistant Carl Ludin (right) alongside of the 40-inch Lens, 1896. |Source=[http://www.nps.gov/history/history/online_books/butowsky5/astro4pp.htm#1 Astronomy and Astrophysics Yerkes Observatory] |Date=1988 |A

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