Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Letters and papers relating to disputes at Ferndale; Ffaldau Colliery, Pontycymmer; Cwmaman; Pontypool; Merthyr Vale; East Elliot Pit, New Tredegar; Morfa Colliery, Taibach.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Letters, papers and reports relating to disputes at the Court Herbert Colliery and other Dynevor Collieries; Tylorstown; The Great Western Colliery, Hopkinstown; Aberaman; Morfa; and particularly the Plymouth Collieries. Mainly 1880, 1886, and 1889-1893.