1Thomas Jefferson to Nicolas G. Dufief, [18] September 1813 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
2Nicolas G. Dufief to Thomas Jefferson, 29 September 1813 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
3Thomas Jefferson to Nicolas G. Dufief, 7 November 1813 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
4Nicolas G. Dufief to Thomas Jefferson, 26 November 1813 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
5Thomas Jefferson to Nicolas G. Dufief, 20 March 1814 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
6Nicolas G. Dufief to Thomas Jefferson, 6 April 1814 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
7Nicolas G. Dufief to Thomas Jefferson, 14 April 1814 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
8Joseph Coppinger to Thomas Jefferson, 6 April 1815 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
9Thomas Jefferson to Joseph Coppinger, 25 April 1815 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]
10Joseph Coppinger to Thomas Jefferson, 15 September 1815 (Jefferson Papers)
The American Practical Brewer and Tanner (J. Coppinger) [index entry]