Here are the details of maps for Dagenham (N):
This detailed map covers the northern part of Dagenham, stretching from Frizlands Lane and the east end of Becontree Heath, eastward to the River Rom; and from Rush Green Road southward to Eastbrookend Farm. The area was entirely rural in 1915 and the only notable features are a few farms, some houses at the end of Becontree (Beacontree) Heath, Ilford Park cemetery (now Eastbrookend cemetery) and Romford Isolation Hospital. All rather different today!
The map links up with Essex Sheet 79.10 Romford to the north, 79.13 Becontree Heath to the west, 79.15 Hornchurch to the east and 87.02 Dagenham to the south.