Sheet 43, Old Series 1". set of 4 quarter sheets, 1855. First editions. Monmouthshire, Herefordshire, Gloucestershire: all county towns
Sheet 43, Old Series 1". set of 4 quarter sheets, 1855. First editions. Monmouthshire, Herefordshire, Gloucestershire: all county towns, River Wye. Base maps all 1831, geology dated 1845/55 (sic) or not dated as typical for earliest geological maps. Issued between 1872-1881, but made as set after 1881. Hand-coloured engravings, each 44 x 52.5cm. cut, mounted and folded to 22 x 13cm. Clear plate marks but close to right and left edges. Clean, colours bright. In very 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.