All changes to tower
| Date | Change | Source |
|---|---|---|
| 8 Oct 2019 | 1-6: partials added | Tim Jackson via e-mail |
| 9 Apr 2019 | 1-6: nominal added | Tim Jackson via 00013373 |
| 7 Apr 2019 | 1-6: diam,turning added,canon info amended; frame: layout added | Tim Jackson via 00013369 |
| 29 Apr 2011 | 1-6: frame id added; frame info added | John Greenhough via e-mail |
| 1-6: canon info added | John Baldwin via database | |
| 16 Jan 2010 | 1,2,3,4,6: historically important ('listed' by CBC) | David Knight via e-mail |