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Airy, George Biddell in correspondent 
1850-1859::1859::11 in date 
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From:
Sir John Herschel
To:
George Biddell Airy
Date:
[23 November 1859]
Source of text:
RGO 6.170.195
Summary:

Is preparing a list of telescopes with their focal lengths and quality, and asks GA to correct JH's list.

Contributor:
John Herschel Project
From:
George Biddell Airy
To:
Sir John Herschel
Date:
[25 November 1859]
Source of text:
RS:HS 1.244 (C: RGO 6.170.197)
Summary:

Regarding telescopes in various places.

Contributor:
John Herschel Project