1John Hollins to Thomas Jefferson, 27 January 1811 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
2Thomas Jefferson to Peter B. Porter, 8 March 1811 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
3Thomas Jefferson to Joel Yancey, 18 July 1815 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
4Thomas Jefferson’s Notes on a Conversation with Henry Dearborn, 7 October 1815 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
5Henry Dearborn to Thomas Jefferson, 3 December 1815 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
6Thomas Jefferson to Joel Yancey, 20 February 1816 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
7Bernard Peyton to Thomas Jefferson, 19 March 1816 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
8Bernard Peyton to Thomas Jefferson, 27 March 1816 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]
9Bernard Peyton to Thomas Jefferson, 10 November 1817 (Jefferson Papers)
gypsum (plaster of paris); price of [index entry]