Mae'r cwcis hyn yn gwbl angenrheidiol ar gyfer weithrediad y wefan.
Rydym yn defnyddio Google Analytics i fesur sut ydych yn defnyddio'r wefan er mwyn i ni ei wella yn seiliedig ar angen defnyddwyr.
Gall y cwcis hyn gael eu gosod gan wefannau trydydd parti a gwneud pethau fel mesur sut rydych yn gwylio fideos YouTube.
Amgueddfa Cymru
A 'British Thompson-Houston Co. Ltd' black hardback file, with a series of quotations and catalogues relating to the construction of a condensing plant. Includes a letter to E.I. David from the British Thomson-Houston Company and series of calalogues / leaflets relating to their equipment / machinery etc. The file also includes a series of quotes and product catalogues sent to the Thompson-Houston Company (and then forwarded on to E.I David) from Metropolitan-Vickers Electrical Co. Ltd., W.H. Allen Sons & Co.Ltd, Mirrlees Watson Co. Ltd. and Worthington Simpson Ltd. Also included are some blueprint engineer's drawings for the equipment (four of which are loose in the back of the file).