- P6/4/4.
- Ffeil
- 1939.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
A survey of the changed position of the South Wales coal trade since 1913.
Williams, Iestyn Rhys, 1892-1955.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
A survey of the changed position of the South Wales coal trade since 1913.
Williams, Iestyn Rhys, 1892-1955.