To David Haddon-Reece

For his notes on the bells, clock and heraldry and advice on the stained glass imagery.

To Harrison and Harrison

For access to their archive.

To Keith Simmonds

For his Heartbeat photographs.

To John Smailes

For his photographs and access to his exhibition archive.

To Peter Wainwright

For his Heartbeat reminiscences.

To Paul Wood

For his photographs, particularly of the windows.

To Aardvark

For the map.