South Wales Miners' Federation minute book, Ychwanegu i'r clipfwrdd [1] Ffeil 1914. Rhan oSWML Collection : : South Wales Miners' Federation minute books.
South Wales Miners' Federation minute book, Ychwanegu i'r clipfwrdd [2] Ffeil 1915. Rhan oSWML Collection : : South Wales Miners' Federation minute books.
South Wales Miners' Federation minute book, Ychwanegu i'r clipfwrdd [3] Ffeil 1916. Rhan oSWML Collection : : South Wales Miners' Federation minute books.
South Wales Miners' Federation minute book, Ychwanegu i'r clipfwrdd [4] Ffeil 1917. Rhan oSWML Collection : : South Wales Miners' Federation minute books.
South Wales Miners' Federation minute book, Ychwanegu i'r clipfwrdd [5] Ffeil 1918. Rhan oSWML Collection : : South Wales Miners' Federation minute books.
