1Thomas Jefferson to Bernard Peyton, 18 January 1819 (Jefferson Papers)
Peyton, Bernard; and gypsum for TJ [index entry]
2Thomas Jefferson to Bernard Peyton, 8 March 1816 (Jefferson Papers)
Peyton, Bernard; and gypsum for TJ [index entry]
3Thomas Jefferson to Bernard Peyton, 3 November 1817 (Jefferson Papers)
Peyton, Bernard; and gypsum for TJ [index entry]