Commons register maps All dates given are approximate, based on the first entry for each register unit in the Registers of Commons (DCC/CC/4/1/1-2); in practice, maps may contain amendments up to the present day. Each catalogue description uses the original sheet number as the final element of the catalogue reference (i.e. Sheets 1 to 88 are catalogued as DCC/CC/4/2/1-88). The maps are based on Ordnance Survey data and measure approximately 56 cm x 56 cm. [c1967]-1970