All changes to tower
| Date | Change | Source |
|---|---|---|
| 22 Mar 2010 | 6: wt amended | Chris Pickford via 00008566 |
| 19 Jan 2010 | 1,2: date amended | Chris Pickford via e-mail |
| 18 Jan 2010 | 1,2,3,6: wt amended (canon removal 1980); 7,8: canon info amended | John Baldwin via database |
| 17 Jan 2010 | 4,5: wt amended | Chris Pickford via 00008354 |
| 1-8: turning, canon info added | John Baldwin via database | |
| 5 Sep 2009 | Tenor note not F; nominal E+17c | Chris Pickford via e-mail |
| 1-8: nominal added | Chris Pickford via 00008067 |