O. P. Hughes Collection of Merionethshire Gold Mining Records,
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O. P. Hughes Collection of Merionethshire Gold Mining Records,
Croesor Slate Quarries Records,
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Croesor Slate Quarries Records,
Merionethshire Electoral and Jury Lists,
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Merionethshire Electoral and Jury Lists,
Anglesey and Caernarfonshire Deeds,
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Anglesey and Caernarfonshire Deeds,
E. W. Cemlyn-Jones Collection of Caernarfonshire Deeds,
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E. W. Cemlyn-Jones Collection of Caernarfonshire Deeds,
Dôl y Cae (Tal-y-Llyn) Deeds,
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Dôl y Cae (Tal-y-Llyn) Deeds,