| Disgrifiad | i-vi Map A, sheets 1-6, co. Anglesey.
vii-xi Map B, sheets 1-3;5-6, co. Anglesey.
xii-xvi Map C, sheets 1-4;6, cos Caernarfon and Anglesey.
xvii-xxii Map D, sheets 1-6, co. Caernarfon.
xxiii-xxviii Map E, sheets 1-6, cos Caernarfon, Denbigh and Merioneth.
xxix-xxxii Map F, sheets 1-4, co. Caernarfon.
xxxiii-xxxvi Map G, sheets 1-4, co. Caernarfon.
xxxvii-xlii Map H, sheets 1-6, cos Denbigh, Flint and Caernarfon.
xliii-xlvi Map I, sheets 1-4, co. Merioneth |