Map of Hendon area by J Cary: 15 Miles Round London, 1785
This map is © Motco 2000; the full map from which this is extracted may be seen at their website.
There is an extended article on Hendon in Lewis's Topographical Dictionary of England, 1848
Another good source of local history is "A History of the County of Middlesex: Volume 5 - Hendon, Kingsbury, Great Stanmore, Little Stanmore, Edmonton Enfield, Monken Hadley, South Mimms, Tottenham' - Victoria County History 1976, available on British HIstory online.
Barnet Council have a short article on Hendon Church End on their website.
St Mary's School recently celebrated 300 years since its foundation - see local news article.