51Horatio G. Spafford to Thomas Jefferson, 29 May 1818 (Jefferson Papers)
sainfoin [index entry] seeds; sainfoin [index entry]
52Thomas Appleton to Thomas Jefferson, 15 January 1820 (Jefferson Papers)
sainfoin [index entry] seeds; sainfoin [index entry]
53John S. Skinner to Thomas Jefferson, 4 May 1820 (Jefferson Papers)
Anderson, James; and sainfoin [index entry] Armstrong, John; and sainfoin [index entry]
54Thomas Jefferson to John S. Skinner, 16 May 1820 (Jefferson Papers)
or Spanish sainfoin to