All changes to tower
| Date | Change | Source |
|---|---|---|
| 7 Aug 2023 | 1-3: nominal, note added; frame Fr1: date added, truss amended | Tim Jackson, from personal visit. Recorded by Tim Jackson and analysed by Nick Bowden. Additional information taken from CB ER Yorks, Dawson |
| 30 Jan 2014 | 1-3: turning added | John Arthur via 00010621 |
| 26 Dec 2012 | 3: founder amended | George Dawson via e-mail |
| 16 Feb 2010 | Frame: truss amended | John Arthur via e-mail |
| 15 Feb 2010 | 1-3: frame id added; frame info added | John Arthur via 00008461 |