1François Gard to Thomas Jefferson, 9 April 1816 (Jefferson Papers)
schools and colleges; New York Institution for the Deaf and Dumb [index entry]
2Samuel L. Mitchill to Thomas Jefferson, 21 May 1819 (Jefferson Papers)
schools and colleges; New York Institution for the Deaf and Dumb [index entry]
3Samuel L. Mitchill to Thomas Jefferson, 16 May 1820 (Jefferson Papers)
schools and colleges; New York Institution for the Deaf and Dumb [index entry]