1From Thomas Jefferson to Robert R. Livingston, 30 April 1800 (Jefferson Papers)
Your favor of Feb. 28. never came to my hand till the 17th. inst. this must account for the greater portion of the delay which has attended the acknolegement of it. I thank you for the volume of your Agricultural transactions : and as I percieve you take a great interest in whatever relates to this first & most precious of all the arts, I have packed in a small box, a model of a mouldboard of...