Hints from the manufacturers of the raw material of saltpetre into gunpowder, oil of vitriol, &c. &c.
Hill, Edmund,gunpowder manufacturer.
[London,
1793]
Signed and dated at end: "Edmund Hill, Gunpowder office, Savage Gardens, May 20, 1793".
ESTC
Goldsmiths',
http://galenet.galegroup.com/servlet/ECCO?c=1&locID=nlibscot&stp=Author&ste=11&af=BN&ae=N049860&tiPG=1&dd=0&dc=flc&docNum=CW108386735&vrsn=1.0&srchtp=a&d4=0.33&n=10&SU=0LRL+ OR+0LRI