Subject: Engraving of Saltpetre Refinery Royal Gunpowder Factory foreground, Waltham Abbey Church background, inscribed Rock & Co London, No 3736. Enlarged print of original is held by Waltham Abbey Historical Soc. See also wasc-1209, wasc-1766
Description: Engraving of Saltpetre Refinery Royal Gunpowder Factory foreground, Waltham Abbey Church background, inscribed Rock & Co London, No 3736. Enlarged print of original is held by Waltham Abbey Historical Soc. See also wasc-1209, wasc-1766
