Sheet 26 - Bartholomew's "Half Inch to Mile" Map of England & Wales - Chelmsford
Despite its cover title, it actually shows most of Essex (as said on the map title).
Explanatory note in the bottom right corner that defines First Class, Secondary and Indifferent (Passable) classes of roads.
More details on Bartholomew's maps are on the Publisher's page.
Scale of 8 miles = 101.3mm, or 2.0 miles/inch, ie 1:126,720.
The height scale of colours fails to indicate depths below sea level - depths are shown on the map.
Roads revised by The Cyclists Touring Club. Copyright - John Bartholomew FRGS.
The railway lines include the Tollesbury Pier line (opened 1907) but not the Thaxted branch (1913), and hence the assigned date.