Draughtsman: Dawson, Robert
Medium: Pen and ink on paper
This plan of south Anglesey extends from Cymran Bay to the Menai Strait on the left of the map, and inland to Llangefni on the right. Black-ink numbers, visible on high spots, indicate the height of hills. Archaeological details are recorded in black gothic lettering. An area calculation table survives in black ink in the top left margin. The circular hole in the top right-hand corner shows an 'Ordnance Office Copy' blind stamp has been removed from the manuscript.