Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Richard Thomas & Baldwins Ltd
Diwydiant
R.T.B. Colour Coated, Changing the Face of Steel
Publisher: Richard Thomas & Baldwins Ltd
(1965)
1992.222/3
Diwydiant
R.T.B. Colour Coated Steel Sheet & Coil (booklet)
Publisher: Richard Thomas & Baldwins Ltd
(unknown date)
1992.222/6
Diwydiant
R.T.B. Spencer Works (leaflet)
Production: Richard Thomas & Baldwins Ltd
(1966)
1995.161/3
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