This very detailed map is one of a group of 4 published for Darlington. It covers the centre of the town, with coverage stretching from the Market Place northward to North Road station; St Andrews church at Haughton le Skerne is in the top right corner. The main NER railway runs north-south through the centre of the map. Features include engine shed and railway approaches, Parkgate Junction, the busy junction and railway crossing, Darlington Forge, Darlington Steel & Iron Works, Skerne Iron & Steel Works, Alliance Works, all with their railway sidings and connections; Haughton Road Brewery, NER Fighting Cocks Loop Line, St James church, Borough Hospital, Albert Hill, St Cuthbert's church, Priestgate Works, Bondgate, High Row, Blackwellgate, Skinnergate, Parkgate, Northgate, Hope Town Lane, tramways, Town Hall, Hopetown goods station. There are extracts from a street directory on the reverse.
The map links up with Sheet 55.02 Darlington North to the north, 55.05 Darlington West to the west and 55.10 Darlington South to the south.
You might find this index map useful.