South Wales Miners' Federation circular, 5 June 1917
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Part of SWCC/MNA/NUM/3/3/2: South Wales Miners' Federation circular, 5 June 1916
- Teitl
 - South Wales Miners' Federation circular, 5 June 1917
 
Part of SWCC/MNA/NUM/3/3/2: South Wales Miners' Federation circular, 5 June 1916