From James Lovell
Philadelphia 26th: December 1781
I have not yet been made certain, that you comprehend that Cypher which I used in my Letters to you, and which will yet awhile be used.
You are to form Alphabets equal in number and of the same commencement and Range, as the Letters of the first sixth part of the family Name where you and I supped last with Mrs. Adams, and you are to look alternately into those constructed Alphabets opposite to my figures, for the Elements to spell with, some figures however I may have used as Baulks.1
RC (Adams Papers); addressed: “John Adams Esquire.” Sent as an enclosure in Robert R. Livingston to JA, 26 Dec., above.