1To Thomas Jefferson from Charles Lynch, 20 November 1775 (Jefferson Papers)
...to ascertain the truth of a report that saltpeter deposits had been found in Virginia, and...
2To Thomas Jefferson from John Carey, 4 July [1791] (Jefferson Papers)
...especially if not expensive or troublesome. “Now Saltpetre is universally known to be a very...
3To Thomas Jefferson from Tench Coxe, 16 March 1794 (Jefferson Papers)
...am uneasy at our want of Sulphur and saltpetre. We shall be exceedingly restrained in our...
4To Thomas Jefferson from John Stuart, 11 April 1796 (Jefferson Papers)
...lately found in a Cave by some Saltpetre manufacturers about five miles from my House...
5To Thomas Jefferson from Samuel Brown, 17 March 1797 (Jefferson Papers)
...the society papers and specimens, including saltpetre rock and mammoth bones from a...
6To Thomas Jefferson from Palisot de Beauvois, 25 April 1798 (Jefferson Papers)
...printed. One of the workers in the saltpeter which is abundantly mined in that underworld...
7To Thomas Jefferson from Bishop James Madison, 17 January 1800 (Jefferson Papers)
. Is it not probable, that the Saltpeter which abounds in the Part of the Country where thes...
8To Thomas Jefferson from Pierre Samuel Du Pont de Nemours, 23 July 1801 (Jefferson Papers)
...it, he can proceed to do the refining of your saltpetre; which it seems to me, would be wiser,...
9To Thomas Jefferson from William Caruthers, 29 July 1801 (Jefferson Papers)
...made an arrangement for the extraction of saltpeter from TJ’s property in Rockbridge County...
10To Thomas Jefferson from Pierre Samuel Du Pont de Nemours, 12 May 1802 (Jefferson Papers)
.... We are close to Philadelphia to refine the saltpeter. Once it is refined, it keeps without...