1Thomas Jefferson to Eleuthère I. du Pont de Nemours, 24 April 1811 (Jefferson Papers)
gunpowder; quality of [index entry]
2Eleuthère I. du Pont de Nemours to Thomas Jefferson, 17 May 1811 (Jefferson Papers)
gunpowder; quality of [index entry]
3Thomas Jefferson to Patrick Gibson, 20 May 1813 (Jefferson Papers)
gunpowder; quality of [index entry]
4Thomas Jefferson to Patrick Gibson, 12 June 1813 (Jefferson Papers)
gunpowder; quality of [index entry]