List of Mines – openworks 1887-1888.
List of Mines – openworks 1892.
Mineral Statistics List of Clay Works 1868-1874.
MJ 1874 p.607
Register of Defunct Companies 1990 p.367.
Reports of the Inspectors of Mines to Her Majesty’s Secretary of State for the Year 1874, p. 320.
Or: North Goonbarrow China Clay Ltd.
See also: English China Clays Ltd.