All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Dec 2023 | Frames Fr1, Fr2: truss, layout, note added | Jack Hunt, from personal visit and citing G&J records |
| 22 Jul 2009 | 1-6: nominal added | Roy Williams via 00007825 |
| 1-6: turning, frame id added; frame info added | John Baldwin via database |