1John Laval to Thomas Jefferson, 28 May 1819 (Jefferson Papers)
Storia Universale (Diodorus Siculus) [index entry]
2Thomas Jefferson to John Laval, 8 May 1819 (Jefferson Papers)
Storia Universale (Diodorus Siculus) [index entry]
3Thomas Jefferson to John Laval, 3 May 1819 (Jefferson Papers)
Storia Universale (Diodorus Siculus) [index entry]
4John Laval to Thomas Jefferson, 19 April 1819 (Jefferson Papers)
Storia Universale (Diodorus Siculus) [index entry]
5Thomas Jefferson to John Laval, 11 April 1819 (Jefferson Papers)
Storia Universale (Diodorus Siculus) [index entry]