Postlethwaite's mines and mining in the English Lake District.
Postlethwaite, John.
Beckermet : Michael Moon,
1975.
Facsimile reprint of: 3rd ed., Whitehaven : W.H. Moss, 1913.
Republished with and additional biographical sketch of the author by E.H. Shackleton.
Mining industry and finance
Geology