Report on the records of the Moel Fferna Slate Quarry, Merioneth, 18th-19th century.
Great Britain.Royal Commission on Historical Manuscripts.
Great Britain.National Register of Archives.
[London?] : [Royal Commission on Historical Manuscripts : National Register of Archives],
1973.
Reproduced for Merioneth County Record Office (M/990) by the Royal Commission on Historical Manuscripts...
"No. 73/304."