Sheet 67N Drift, Old Series 1". 1881. First drift edition. Norfolk: Great Yarmouth.
Sheet 67N Drift, Old Series 1". 1881. First drift edition. Norfolk: Great Yarmouth. Topography date too faint, geology 1881, entirely. Hand-coloured engraving, 77 x 56cm (half folio sheet format), flat, clear plate marks, stencilled sheet no. in lower left corner, crease across lower right corner. Clean, pastel colours clear. 85% sea area. Legend and summary borehole log in sea area. Unusual layout combines what would have been sheets 67NW and 68SW, produced from electrotype for the geological survey, not part of standard Ordnance Survey layout. In good condition.
About the England & Wales One Inch Old Series
The Geological Survey of England and Wales used the Old Series of the Ordnance Survey topographic map at a scale of one inch to the mile as its basemap, initially. These engraved basemaps were published and revised between 1805 and 1885; the sheet sizes varied and the layout and numbering system were eccentric. The Old Series geological maps were hand-coloured and without geological sections, which were published separately. The GS of E&W published the Old Series from 1850 to 1900, when it switched to the colour printing and the New Series one inch maps. However, old stock of the Old Series continued to be issued, hand-coloured, until the 1930s.