Cassell's Complete Atlas
Across the top is "England and Wales, South East Sheet", and across the bottom "Maclure, MacDonald and Macgregor's Steam Litho:Machines.London." and "Published by Cassell, Petter & Galpin, La Belle Sauvage Yard, Ludgate Hill, EC."
The map is found in the Complete Atlas (1862) and in Cassell's British Atlas (1864).