1John Quincy Adams to Abigail Adams 2d, 15 March 1786 (Adams Papers)
Euclid, Elements of Geometry
2Thomas Cooper to Thomas Jefferson, 15 September 1814 (Jefferson Papers)
Euclid; Elements [index entry]
3Thomas Jefferson to John L. E. W. Shecut, 25 September 1814 (Jefferson Papers)
Euclid; Elements [index entry]
4Thomas Jefferson to Philip I. Barziza, 23 January 1816 (Jefferson Papers)
Euclid; Elements [index entry]
5Thomas Jefferson to Robert Patterson, 7 November 1820 (Jefferson Papers)
Euclid; Elements [index entry]