Detholiad o ffotograffau gan y ffotograffydd cynnar o Gymru John Thomas (1838-1905)
Dr Walker, Corwen
Dr Daniel Davies, Abertawe (1797-1876)
Dr John Thomas (1821-92)
Dr Hugh Williams (copi)
Dr Edwards, Llanbryn-mair a Cemais (Tfn)
Dr Jones, Lerpwl
