Portfolio containing copies of some of the Ordnance Survey preparatory maps of parts of North Wales by Robert Dawson. Scale – 2in:1mile 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 [1816-1824]