1Thomas 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...
2From James Madison to Mark Langdon Hill, [post–17] April 1820 (Madison Papers)
I have recd. yr. favor of the 17. enclosing 2 letters from Mr. Jefferson, one to the late Govr....
3From James Madison to Mark Langdon Hill, 18 April 1822 (Madison Papers)
J. Madison, with his respects to Mr. Hill, returns his thanks for the copy of the Report of the...