To George Washington from an Unknown Person, 20 December 1777 [letter not found]
Letter not found: from an Unknown Person, 20 Dec. 1777. In his letter to an Unknown Person of 6 Jan. 1778, GW writes that “I recd yours of the 20th decemr.”
“To George Washington from an Unknown Person, 20 December 1777 [letter not found],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/03-12-02-0597. [Original source: The Papers of George Washington, Revolutionary War Series, vol. 12, 26 October 1777 – 25 December 1777, ed. Frank E. Grizzard, Jr. and David R. Hoth. Charlottesville: University Press of Virginia, 2002, p. 657.]