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Shepherde, Richard Clark and William in correspondent 
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Herschel, John in addressee 
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From:
Richard Clark and William Shepherde
To:
Sir John Herschel
Date:
1848-8
Source of text:
RS:HS 19.136a
Summary:

Increasing importation of [whale oil] allows Metropolitan Light Company to reduce [candle] prices.

Contributor:
John Herschel Project