1Thomas Jefferson to Isaac A. Coles, 7 May 1817 (Jefferson Papers)
Coles, Isaac A.; and seeds [index entry]
2Isaac A. Coles to Thomas Jefferson, 8 May 1817 (Jefferson Papers)
Coles, Isaac A.; and seeds [index entry]
3Thomas Jefferson to John S. Skinner, 16 May 1820 (Jefferson Papers)
Coles, Isaac A.; and seeds [index entry]