Great Britain. Ordnance Survey of England. (Third edition) Great Britain. Geological Survey of England and Wales. Sheet 236 drift. Geological Survey of Great Britain. North Decimal Degree 51.866700. South Decimal Degree 51.7000. East Decimal Degree -1.2333. West Decimal Degree -1.6500. In upper left margin: Ordnance Survey of England (Third edition). Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. "Original geolgocial survey on the one-inch scale, by E. Hull, published 1859. Much of eastern part reproduced from special Oxford Sheet, published 1908. Drift survey completed on six-inch scale by H. G. Dines; solid geology partly revised by H.G. Dines and L. Richardson, 1935-36.".
