1John Neilson to Thomas Jefferson, 15 February 1820 (Jefferson Papers)
A difference of opinion between General Cocke and me, having arrose as to the terms of our...
2John Neilson to Thomas Jefferson, 28 May 1820 (Jefferson Papers)
Inclosed I send you my account and am anxious you would setles it in whatever manner you may deem...
3To Thomas Jefferson from John Neilson, 5 May 1823 (Jefferson Papers)
I send you the north front of the Rotunda, by comparing it with the flank veiw, you will percieve...