7 Dec. 1809
Original paper slip text:7 Dec. 1809 f.
Ciphers (lock and key system, with sliding paper strips attached) and explanations; also a table for computing compound interest at 6 per cent a year, payable quarterly
7 p. (in JQA's hand) in a series numbered in pencil 1–18 (the date "7. Decr. 1809.f." appears on p. 12 only). (Note that p. 19–21 are a different size of sheet and may not belong with this batch at all.)
JQA—Ciphers
- Watermarks: "E Patterson W City 1806" except on p. 2–5, which is a different paper and probably indicates that the table for computing interest (written thereon) does not actually belong with the cipher material.
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Adams Papers microfilm: reel 602. TS Ciphers JQA
Original held by:Massachusetts Historical Society
From the collection: Adams Family Papers
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