Here is information about the map for Friern Barnet:
The map shows Friern Barnet on the left side and New Southgate on the right of the GNR railway that runs through the map, including the large New Southgate station. The dominant feature is the massive Colney Hatch Asylum, the largest such institution in Europe when it opened in 1851. To its west of it is St John's church, Southgate College, Colney Hatch village and Halliwick Manor House. The map extends northward to Brunswick Park, southward to Bounds Green Farm. Other features include Arnos Grove Wood, Bowes Road, Pymmes Brook, Waterfall Hill, the Clock & Watchmakers Asylum, Friern Barnet Lane, Minchenden Wood. There are directories for Avenue Road, Friern Barnet Road and Oakleigh Road on the reverse.
The map links up with Middlesex Sheets 7.09 East Barnet to the north, 6.16 North Finchley to the west, 7.14 Palmers Green to the east, and London Sheet 6 Alexandra Park to the south.