Thread: Restoration of Grubb 1887 astrograph at Powerhouse Museum
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Old 12-12-2014, 11:13 AM
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okiscopey (Mike)
Rocky Peak Observatory

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Restoration of Grubb 1887 astrograph at Powerhouse Museum
An interesting report by Kate Chidlow, Conservator:

http://tinyurl.com/pu5kdoh
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