1Thomas Jefferson to Louis H. Girardin, 18 March 1814 (Jefferson Papers)
books; on mathematics [index entry]
2Thomas Jefferson to Louis H. Girardin, 7 July 1814 (Jefferson Papers)
books; on mathematics [index entry]
3Thomas Jefferson to Louis H. Girardin, 4 March 1815 (Jefferson Papers)
books; on mathematics [index entry]
4Thomas Jefferson to Louis H. Girardin, 12 May 1815 (Jefferson Papers)
books; on mathematics [index entry]