11Fernagus De Gelone to Thomas Jefferson, 14 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
12Thomas Jefferson to Fernagus De Gelone, 22 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
13Fernagus De Gelone to Thomas Jefferson, 29 June 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]
14Thomas Jefferson to Fernagus De Gelone, 7 July 1820 (Jefferson Papers)
deafness; education of deaf and mute [index entry]