All changes to tower
| Date | Change | Source |
|---|---|---|
| 13 Dec 2014 | 1-8: nominal added; 4: diam amended | Tim Jackson via 00011016 |
| 15 Jul 2010 | 1-8: frame id added; frame info added | James Clarke via e-mail |
| 28 Apr 2006 | URL removed: www.stthomasringers.co.uk/ - no such host | Xenu check via www |
| 1 Mar 2005 | URL amended | Shaun Brown via e-mail |
| 5 Feb 2005 | URL added | Historians' digest 984#2 (Davd Bryant) via e-mail |
| 26 Sep 2004 | Slight change to dedication to match Crockford entry | Graham Nabb check via e-mail |