W. Gerwyn Thomas (Thomas, W. Gerwyn)

Welsh

• 
  Big Pit, Blaenafon
  by W. Gerwyn Thomas, National Museum of Wales Staff
  Softcover, National Museum of Wales (Amgueddfa Genedlaethol Cymru), ISBN 0720002338 (0-7200-0233-8)

English

• 
  Welsh Coal Mines
  by W. Gerwyn Thomas
  Hardcover, National Museum of Wales, ISBN 0720000599 (0-7200-0059-9)