1Thomas Jefferson to Alexander von Humboldt, 6 March 1809 (Jefferson Papers)
zoology; books on [index entry]
2Thomas Jefferson to Horatio G. Spafford, 14 May 1809 (Jefferson Papers)
zoology; books on [index entry]
3Thomas Jefferson to Louis H. Girardin, 12 May 1815 (Jefferson Papers)
zoology; books on [index entry]