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Amgueddfa Cymru – Museum Wales
Purple print on cream (folded) paper with handwritten details in blue ink. Andrew Barclay, Sons & Company, Ltd.'s Specification of a Coupled Cross Compound Horizontal Condensing Hauling Engine of the Bored Guide - Deep Girder type, known as Barclay's Class "A" for T. Williams & Sons, Llangennech. Dated 11 December 1906.