1Samuel L. Mitchill to Thomas Jefferson, 21 May 1819 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
2John Adams to Thomas Jefferson, 21 February 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
3Samuel L. Mitchill to Thomas Jefferson, 16 May 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
4Fernagus De Gelone to Thomas Jefferson, 14 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
5Thomas Jefferson to Fernagus De Gelone, 22 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
6Fernagus De Gelone to Thomas Jefferson, 29 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
7Thomas Jefferson to Fernagus De Gelone, 7 July 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]