Search: Birch, Thomas in correspondent 
Swinton, John in correspondent 
1760-1769 in date 
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From:
Thomas Birch
To:
John Swinton
Date:
23 September 1760
Source of text:
MM/1/51, Royal Society
Summary:

No summary available.

Contributor:
Royal Society
From:
John Swinton
To:
Thomas Birch
Date:
7 December 1765
Source of text:
L&P/4/302, Royal Society
Summary:

No summary available.

Contributor:
Royal Society