Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Ordnance Map Office
Diwydiant
Collection of OS maps of Brecon, Glam. & Mon.
Production: Ordnance Map Office
(1922)
87.227I/5
Diwydiant
Collection of OS maps of Brecon, Glam. & Mon.
Production: Ordnance Map Office
(1920)
87.227I/12
Diwydiant
Collection of OS maps of Brecon, Glam. & Mon.
Production: Ordnance Map Office
(1922)
87.227I/6
Diwydiant
Collection of OS maps of Brecon, Glam. & Mon.
Production: Ordnance Map Office
(1901)
87.227I/15
Diwydiant
Collection of OS maps of Brecon, Glam. & Mon.
Production: Ordnance Map Office
(1922)
87.227I/7
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