1To Thomas Jefferson from Joseph Leacock, [13?] December 1793 (Jefferson Papers)
Having some time last Summer heard you Express an intention of burning the wood off your Lands in Virginia and making it into Potash, immediately, on returning to my home I gave you the best instructions in my power by Letter, respecting the process, and found an answer to my Letter left at the house of Mr. Cross, Letitia-Court Market Street soon after, with an invitation to call on you when...