Church Fabric Survey database
2013
Sources for Northchurch: St Mary
Antiquarian Horological Society
AHS Turret Clock database
2015
CWGC
Commonwealth War Graves Commission
2016
Nigel Cox (on geograph.org.uk)
Exterior image of 632051 Northchurch St Mary's
October 2007
Church Buildings Council
Church Bells
2019
Church of England
A Church Near You
2021
ICBS
Incorporated Church Building Society Archive
1817-1989