• P751310
    • Roofing slate. Medium quality. Corwen,...
    • P751311
    • Roofing slate. Medium quality. Corwen,...
    • P751312
    • Roofing slate. Medium quality. Corwen,...
    • P751313
    • Roofing slate. Medium quality. Corwen,...
    • P751314
    • Roofing slate. Medium quality. Corwen,...
    • P751315
    • Roofing slate. Medium quality. Corwen,...
    • P751316
    • Roofing slate. Medium quality. Corwen,...
    • P751317
    • Roofing slate. Medium quality. Corwen,...
    • P751318
    • Roofing slate. Medium quality. Corwen,...
    • P751319
    • Roofing slate. Medium quality. Corwen,...
    • P751320
    • Roofing slate. Medium quality. Corwen,...
    • P751329
    • Slate (medium quality old vein...
    • P751330
    • Slate (best quality old vein roofing)....
    • P751331
    • Slate medium quality old vein roofing)....
    • P751332
    • Slate (first quality old vein roofing)....
    • P751333
    • Slate.Medium Old Vein. Ordovician....
    • P751334
    • Slate Best Old Vein. Ordovician. Oakley...
    • P751335
    • Slate, New Vein. Ordovician. Oakley...
    • P751336
    • Roofing slate. Oakley second quality....
    • P751337
    • Slate, Oakley Strong New Vein....
    • P751338
    • Slate (second best quality roofing)....
    • P751339
    • Slate (second quality roofing)....
    • P751340
    • Slate (best quality roofing). Llanfair...
    • P751343
    • Slate (back vein). Maenofferen (M)...
    • P751345
    • Roofing slate (second mediums)....
    • P751346
    • Slate (seconds Craig Ddu b.7.). Unknown...
    • P751347
    • Roofing slate (back vein)....
    • P751348
    • Roofing slate (best old vein). Votty &...
    • P751349
    • Roofing slate (best mediums)....
    • P751350
    • Slate (medium quality new vein...
    • P751351
    • Slate (medium old vein). Maenofferen...
    • P751352
    • Slate (medium quality old vein...
    • P751353
    • Slate (best old vein). Maenafferen...
    • P751354
    • Slate (best old vein roofing). Manod...
    • P751355
    • Slate (strong mediums roofing). North...
    • P751356
    • Slate (medium old vein roofing). Votty...
    • P751357
    • Slate. Votty & Bowydd Quarries, near...
    • P751358
    • Roofing slate: second quality. Craig...
    • P751359
    • Roofing slate: strong medium quality....
    • P751360
    • Slate (second medium roofing). Votty &...
    • P751361
    • Roofing slate (best deep vein)....
    • P751362
    • Roofing slate (extra strong 'deep vein'...
    • P751363
    • Roofing slate (mediums). Llechwedd...
    • P751364
    • Roofing slate (best old vein)....
    • P751365
    • Roofing slate (strong 'deep vein' or...
    • P751366
    • Roofing slate (strong 'deep vein' or...
    • P751371
    • Roofing slate. Strong medium Quality....
    • P751372
    • Roofing slate. Extra Strongs quality....
    • P751373
    • Roofing slate. Extra Strongs quality....
    • P751380
    • Roofing slate (mediums). Llechwedd...
    • P751597
    • Roofing slate (thick best 'vaengaled',...
    • P751598
    • Roofing slate (best quality blue)....
    • P751601
    • Slate (seconds Abercwmeiddaw- silver...
    • P751602
    • Slate (best Abercwmeiddaw). Unknown...
    • P751604
    • Slate (seconds Abercwmeiddaw). Corris,...