“To George Washington from Thomas Cresap, 8 April 1786 [letter not found],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/04-04-02-0008. [Original source: The Papers of George Washington, Confederation Series, vol. 4, 2 April 1786 – 31 January 1787, ed. W. W. Abbot. Charlottesville: University Press of Virginia, 1995, p. 7.]