Volume Four - An Era of Change, Uncertainty, Depression & War - The era of God's wonderful railway - the GWR years . . .

	1936 - The G.W.R. Docks at Cardiff - Britain's Western Gateways.
	1920's - G.W.R. South Wales Docks - Cardiff, Newport, Penarth, Swansea, Barry and Port Talbot - 'Britain's Western Gateways.'
	1928 - Advertisement for the Tredegar Associated Collieries & Shipping Co., Ld.of Bute Docks, Cardiff.