Dines, H.G. The Metalliferous Mining Region of South-West England, Vol. I, p.62.
National Archives: CRES 37/953.
Noall, C. 1973. The St Just Mining District. D. Bradford Barton, Monographs on Metalliferous Mining History Volume Five. p.8-9, 64, 95, 178.
Or: Lecha tin bounds.
See also: Wheal Hermon