1924 : GWR Plan : Penarth Dock Steam Sheds. A plan at a scale of 40 feet to 1 inch drafted at Caerphilly in November 1924 showing the main facilities and illustrating the complexity of the water supply network required in support of such a maintenance depot. The original of this blueprint is held at the National Museum of Wales archives at Nantgarw and is reproduced with permission. [629] [Museum item number : 88.81I/12] [20180317]