1Thomas Cooper to Thomas Jefferson, 15 September 1814 (Jefferson Papers)
Elements (Euclid) [index entry]
2Thomas Jefferson to John L. E. W. Shecut, 25 September 1814 (Jefferson Papers)
Elements (Euclid) [index entry]
3Thomas Jefferson to Philip I. Barziza, 23 January 1816 (Jefferson Papers)
Elements (Euclid) [index entry]
4Thomas Jefferson to Robert Patterson, 7 November 1820 (Jefferson Papers)
Elements (Euclid) [index entry]