London nIV_NW (6 inch to the mile) - London nIV_NW (6 inch to the mile)
OS revised: 1912 to 1913, Geological Survey surveyed: 1898 to 1899, Revised: 1920, Published: 1932 Size: map 31 x 46 cm (ca. 12 x 18 inches), on sheet ca. 47 x 67 cm (ca. 18 x 26 inches)