All changes to tower
| Date | Change | Source |
|---|---|---|
| 20 Oct 2019 | 1-6: nominal amended,partials added | Tim Jackson via e-mail |
| 8 Jan 2019 | Tenor note & ring key not F# (nominal: G-21c) | Tim Jackson via pNBR |
| 1-6: nominal,turning added,canon info amended | Tim Jackson via 00013218 | |
| 7 Feb 2010 | 1-6: canon info added; frames: date,truss,layout added | John Arthur via 00008420 |