21David Bailie Warden to Thomas Jefferson, 9 August 1816 (Jefferson Papers)
Warden, David Bailie; and books for TJ [index entry]
22David Bailie Warden to Thomas Jefferson, 12 May 1818 (Jefferson Papers)
Warden, David Bailie; and books for TJ [index entry]
23David Bailie Warden to Thomas Jefferson, 12 April 1817 (Jefferson Papers)
Warden, David Bailie; and books for TJ [index entry]
24David Bailie Warden to Thomas Jefferson, [ca. 12–22 August 1817] (Jefferson Papers)
Warden, David Bailie; and books for TJ [index entry]