Sheet 266 - Marlborough (1 inch to the mile, Drift)
OS revised: 1902, Geological Survey surveyed: 1857 to 1895, Revised: 1923 to 1924, Published: 1925, Reprinted: 1952 Size: map 46 x 61 cm (ca. 18 x 24 inches), on sheet ca. 58 x 71 cm (ca. 23 x 28 inches)