1Thomas Jefferson to Mathew Carey, 28 October 1819 (Jefferson Papers)
Potter, Robert; translatesThe Tragedies of Sophocles (Sophocles) [index entry]
2John Laval to Thomas Jefferson, 1 April 1820 (Jefferson Papers)
Potter, Robert; translatesThe Tragedies of Sophocles (Sophocles) [index entry]
3Thomas Jefferson to John Laval, 14 May 1820 (Jefferson Papers)
Potter, Robert; translatesThe Tragedies of Sophocles (Sophocles) [index entry]