1Thomas Jefferson to Joseph Milligan, 11 August 1815 (Jefferson Papers)
mathematics; books on [index entry]
2Thomas Jefferson to Joseph Milligan, 17 August 1815 (Jefferson Papers)
mathematics; books on [index entry]
3Thomas Jefferson to Joseph Milligan, 5 October 1815 (Jefferson Papers)
mathematics; books on [index entry]
4Thomas Jefferson to Joseph Milligan, 9 December 1818 (Jefferson Papers)
mathematics; books on [index entry]