"Survey report"--cover.
"NMR nos: NY30 SW 55 and 61-5, and NY 30 NW 104-7"
"NGR: NY 326 049"
"SMR no: 3124"
Elterwater Gunpowder Works, Cumbria : an archaeological and historical survey by M. Jecock. Published by English Heritage in 2003. Publication and catalogue information, links to buy online and reader comments.