All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Nov 2020 | 1-8: note amended (Ab to A); nominal added S | Chris Richmond recording via Nick Bowden |
| 21 Nov 2017 | 1: wt amended | David Sloman via 00012575 |
| 18 Oct 2017 | frame: material amended | Mike Chester via e-mail |
| 17 Oct 2017 | 1-8: frameid,canon info added; frame info added; 1: fdr amended | Mike Chester via 00012499 |
| 25 Feb 2010 | 1: wt amended | Philip Denton via 00008486 |