By the King. A proclamation for the maintenance and encrease of the mines of saltpeter, and the true making of gunpowder, and reforming abuses concerning the same - Charles (By Bonham Norton, and Iohn Bill, printers to the Kings most excellent Maiestie, 1625)
Dated at end: White-Hall, the thirteenth day of April, in the first yeere of his Maiesties reigne
Keywords: Saltpeter industry; Gunpowder industry; Mining law