POSTCARD – CHICAGO – UNIVERSITY OF CHICAGO – YERKES OBSERVATORY – LAKE GENEVA WISCONSIN – TINTED – 1907   1 comment

POSTCARD - CHICAGO - UNIVERSITY OF CHICAGO - YERKES OBSERVATORY  - LAKE GENEVA WISCONSIN - TINTED - 1907

Posted April 20, 2016 by JOHN CHUCKMAN in Uncategorized

One response to “POSTCARD – CHICAGO – UNIVERSITY OF CHICAGO – YERKES OBSERVATORY – LAKE GENEVA WISCONSIN – TINTED – 1907

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  1. The telescope for this Observatory was the world’s largest refractory telescope at the time. It was on exhibit in the 1893 Col.Expo

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