Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 201 solid and drift. Great Britain. Ordnance Survey of England. North Decimal Degree 52.216700. South Decimal Degree 52.0500. East Decimal Degree -1.2167. West Decimal Degree -1.6500. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. "Original geological survey published on Old Series Sheets 44 NE, 45 NW, 53 SW and 53 SE between 1854 and 1859, partly revised in 1871. Survey on the six-inch scale for Marlstone Ironstone between 1939 and 1943 by T. H. Whitehead; revised and completed between 1954 and 1958 by E. A. Edmonds et al.".