Lancashire CVII.NE (6 inch to the mile) - Lancashire CVII.NE (6 inch to the mile)
OS revised: 1925, Geological Survey resurveyed: 1928 to 1929, Revised (southern part): 1937 to 1938, Published: 1940 Size: map 31 x 46 cm (ca. 12 x 18 inches), on sheet ca. 47 x 67 cm (ca. 18 x 26 inches)