1Thomas Jefferson to Richard Peters, 6 March 1816 (Jefferson Papers)
I have to thank you for the copy of your Discourse on agriculture which you have been so kind as to send me. I participate in all your love for the art, and wish I did also in your skill. but I was never but an amateur, and have been kept from it’s practice until I am too old to learn it. we are indebted to you for much of our knolege as to the use of the plaister, which is become a principal...