All changes to tower
| Date | Change | Source |
|---|---|---|
| 19 Jan 2025 | 1-7: nominal added; 8: nominal amended | Chris Pickford, Taylor records, 1906 (job book 160 p.68) via #008061 |
| 3 May 2020 | 1-8: canon info,turning added | Tim Jackson via e-mail |
| 16 Nov 2006 | Tenor nominal added (F#-47c) | Andrew Higson via pNBR |