[delwedd: Amdanom ni]
[delwedd: 'Coming to bank' Llanerch Colliery c.1910]
[delwedd: Ffatri Teddington controls, Cefn Coed, Merthyr Tydfil, 1951]
[delwedd: Penrhyn slate quarry (b/w photo)]
[delwedd: Cardiff Dock, c.1929 (litho)]
[delwedd: Twenty minutes rest,1940 (b/w photo)]
[delwedd: Dowlais Ironworks, 1840 (w/c on paper)]
[delwedd: Cambrian combine strike, 1910-22 (b/w photo)]
