1Thomas Jefferson to John Hollins, 5 February 1810 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
2Thomas Jefferson to John Hollins, 16 February 1810 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
3Thomas Jefferson to John Hollins, 8 April 1810 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
4John Hollins to Thomas Jefferson, 22 April 1810 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
5Thomas Jefferson to John Hollins, 20 January 1811 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
6John Hollins to Thomas Jefferson, 10 April 1815 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
7Thomas Jefferson to Wilson Cary Nicholas, 15 July 1815 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
8Wilson Cary Nicholas to Thomas Jefferson, 3 August 1815 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
9Thomas Jefferson to Henry Dearborn, 7 October 1815 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]
10Henry Dearborn to Thomas Jefferson, 3 December 1815 (Jefferson Papers)
gypsum (plaster of paris); TJ orders [index entry]