Hipswell/Hudswell
- Plans and notes on Waitwith smelt mill.
- Hornshaw, T.R. “The Richmond Copper Mine”, pp.77-85.
- Warham, P. “Copper mine, Billy Bank Wood, Richmond, North Yorkshire” in a Richmond Miscellany (NYCRO Publication No.25, 1980), pp.79-81.
- Public Record Office – BT31/13256/109746 – Yorkshire Minerals Ltd.
