1Frederick A. Mayo to Thomas Jefferson, 15 March 1822 (Jefferson Papers)
A Dictionary of the English Language (S. Johnson) [index entry]
2Frederick A. Mayo to Thomas Jefferson, 7 April 1822 (Jefferson Papers)
A Dictionary of the English Language (S. Johnson) [index entry]
3Frederick A. Mayo to Thomas Jefferson, 1 September 1822 (Jefferson Papers)
A Dictionary of the English Language (S. Johnson) [index entry]