James Adam brought GW £41 6d. cash, part payment from Robert Adam & Co. for the flour that GW had sold the firm earlier in the year (General Ledger A description begins General Ledger A, 1750–1772. Library of Congress, George Washington Papers, Series 5, Financial Papers. description ends , folio 345).
“[Diary entry: 20 October 1771],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/01-03-02-0001-0025-0020. [Original source: The Diaries of George Washington, vol. 3, 1 January 1771–5 November 1781, ed. Donald Jackson. Charlottesville: University Press of Virginia, 1978, p. 62.]