1Edward Graham to Thomas Jefferson, 3 January 1818 (Jefferson Papers)
Natural Bridge, Va.; TJ’s patent for [index entry]
2Thomas Jefferson to Edward Graham, 8 January 1818 (Jefferson Papers)
Natural Bridge, Va.; TJ’s patent for [index entry]
3William Paxton to Thomas Jefferson, 4 August 1820 (Jefferson Papers)
Natural Bridge, Va.; TJ’s patent for [index entry]