Northumberland nVII.NW (6 inch to the mile) - Northumberland nVII.NW (6 inch to the mile)
OS revised: 1922, Geological Survey surveyed: 1878 to 1883, Revised: 1921, Published: 1952 Size: map 31 x 46 cm (ca. 12 x 18 inches), on sheet ca. 47 x 67 cm (ca. 18 x 26 inches)