Church Fabric Survey database
2013
Sources for Trowell: St Helen
Antiquarian Horological Society
AHS Turret Clock database
2015
CWGC
Commonwealth War Graves Commission
2016
Keltek Trust
Exterior image of 638178 St Helen, Trowell
2009, March 29
Keltek Trust
Interior image of 638178 St Helen, Trowell
2017
Church Buildings Council
Church Bells
2019
Church of England
A Church Near You
2021