Antiquarian Horological Society
AHS Turret Clock database
2015
Sources for Billingborough: St Andrew
CWGC
Commonwealth War Graves Commission
2016
Richard Croft (of geograph.org.uk)
Interior image of 621006 St Andrew, Billingborough
2014, March 24
Julian P Guffogg (of geograph.org.uk)
Exterior image of 621006 St Andrew, Billingborough
2016, February 04
Church Buildings Council
Church Bells
2019
Church of England
A Church Near You
2021