YERKES OBSERVATORY
Williams Bay, WI
40" Refractor Dome

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May 1975, with old dome
(click image for full size)
Click for Yerkes website
1990's with new steel dome
1975 photo is Jeff Cook's 9th Grade Astronomy Club,
photographed by Mr. Teutemacher, Earth Science teacher at
Griffith Jr. High School, Griffith, Indiana.

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