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Keywords from Image Description:
cymru wales llyfrgell genedlaethol cymru llyfrgellgenedlaetholcymru national library of wales nationallibraryofwales john thomas johnthomas negyddion gwydr negyddiongwydr glass negatives glassnegatives men employees workers aberdyfi wales aberdyfiwales aberdovey blackandwhite monochrome people black and white Teitl Cymraeg titleGrwp