CWGC
Commonwealth War Graves Commission
2016
Sources for Heckingham: St Gregory
James Miles
Closed Churches
2018
University of East Anglia
The Medieval Churches of Norwich
2015
The Churches Conservation Trust
Exterior image of 626351
2017
University of East Anglia
The Medieval Churches of Norwich
2017
Church Buildings Council
Church Bells
2019
Church Buildings Council
Pastoral Measure Report 1570
1991