1From Thomas Jefferson to Daniel Clark, 23 June 1799 (Jefferson Papers)
I have to acknolege the reciept of your favor of Feb. 12. [as I] learn with great satisfaction that my letter to mr Nolan has got into so safe a channel for it’s conveyance. the opportunities of knowing any thing of the physical & moral history of the horse in a condition unconnected with man are so rare, that it would be truly unfortunate that what mr Nolan [has] acquired on that subject...