Sources for York: St Martin

Church Fabric Survey database

Antiquarian Horological Society

AHS Turret Clock database

Julian P Guffogg (of geograph.org.uk)

Interior image of 643209 St Martin, York

J.Hannan-Briggs (of geograph.org.uk)

Exterior image of 643209 St Martin, York

Church Buildings Council

Church Bells

Church of England

A Church Near You

Matthias Garn

Kendall Monument - Final Report on the conservation & refixing etc

David Sherriff

QI inspection report on York: St Martin, 01-Feb-2013

David Sherriff

QI inspection report on York: St Martin, 27-Jun-2018