1Jared Sparks to Thomas Jefferson, 12 November 1817 (Jefferson Papers)
Sparks, Jared; and J. Ledyard (1751–89) [index entry]
2Thomas Jefferson to Jared Sparks, 27 December 1817 (Jefferson Papers)
Sparks, Jared; and J. Ledyard (1751–89) [index entry]
3Jared Sparks to Thomas Jefferson, 18 September 1820 (Jefferson Papers)
Sparks, Jared; and J. Ledyard (1751–89) [index entry]