“To George Washington from Maj. Gen. Arthur St. Clair, 15 April 1777 [letter not found],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/03-09-02-0162. [Original source: The Papers of George Washington, Revolutionary War Series, vol. 9, 28 March 1777 – 10 June 1777, ed. Philander D. Chase. Charlottesville: University Press of Virginia, 1999, p. 175.]