Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 304 solid and drift. Great Britain. Ordnance Survey of England. North Decimal Degree 51.1333. South Decimal Degree 50.9667. East Decimal Degree 0.8000. West Decimal Degree 0.4000. 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 on the one-inch scale by F. Drew et al. published on Old Series Sheets 3, in 1868, 4, in 1863, and 5 and 6 in 1864. Resurveyed on the six-inch scale in 1955-60 by J. G. O. Smart et al." In lower right margin: "Based on the seventh series one-inch map, parts of sheets 171 dated 1959, 183 dated 1961 and 184 dated 1960.".