1To George Washington from John Cowper, 23 June 1794 [letter not found] (Washington Papers)
Letter not found : from John Cowper, 23 June 1794. On 30 July, GW wrote to Cowper : "By...
2To George Washington from John Cowper, 20 Aug. 1793 [letter not found] (Washington Papers)
Letter not found : from John Cowper, 20 Aug. 1794. GW wrote Cowper on 4 Sept. , "Your letter of...