1Mark Langdon Hill to Thomas Jefferson, 28 March 1820 (Jefferson Papers)
Altho I have never been honored by a personal acquaintance with you, yet I recollect your...
2Thomas Jefferson to Mark Langdon Hill, 5 April 1820 (Jefferson Papers)
A near relation of my late friend Governor Langdon needs no apology for addressing a letter to me...
3Mark Langdon Hill to Thomas Jefferson, 17 April 1820 (Jefferson Papers)
I am highly honored by your favor of the 5 th inst. , and in relation to the publication of the...