Bartholomew's 1:100,000 Map of Britain - Essex - Sheet 16
The map is on paper, Price 80p.
There is a sketch map of the area covered on the front coloured cover, which is wider and shorter than before. The map covers the same area as when they were the half-inch series, but as it is now a larger scale it's a larger map whilst the same sheet number.
More details on Bartholomew's maps are on the Publisher's page.
Different colouring and symbols from 1970, eg the symbol for Airfield is now a jet aircraft, but Stansted's symbol is just in the middle of a large field.
The M11 is only built from Harlow to Bishops Stortford, and proposed further south and further north. John Bartholomew & Sons Ltd.