Church Fabric Survey database
2013
Sources for York: St Martin
Antiquarian Horological Society
AHS Turret Clock database
2015
Julian P Guffogg (of geograph.org.uk)
Interior image of 643209 St Martin, York
2015, February 07
J.Hannan-Briggs (of geograph.org.uk)
Exterior image of 643209 St Martin, York
2015, February 07
Church Buildings Council
Church Bells
2019
Church of England
A Church Near You
2021
Matthias Garn
Kendall Monument - Final Report on the conservation & refixing etc
2021