1To George Washington from Richard Peters, 12 March 1788 (Washington Papers)
...the greatest Pleasure that I recieve your Commands respecting the Harrows. ...one Harrow...
2To George Washington from Richard Peters, 27 April 1788 (Washington Papers)
harrowed in? I had a great Crop in this Mode—...The Harrow I have had made on my new Plan I have...
3To George Washington from Richard Peters, 27 June 1788 (Washington Papers)
...one does not please me as well as my first Harrow. I must make the Hoes broader to make it...
4To George Washington from Richard Peters, 17 September 1788 (Washington Papers)
...an uncommon Season for Weeds. I am happy the Harrows please you. I have improved on the one...
5Enclosure: [Account on the State of Argriculture], 27 August 1791 (Hamilton Papers)
ploughs Harrows,