All changes to tower
| Date | Change | Source |
|---|---|---|
| 10 Apr 2022 | Frame details added | Chris Pickford, including some information from the Christopher Dalton papers |
| 5 Apr 2022 | 1-6: nominal, canons added; 1-6: note amended | CJP Wavanal 2/4/22; canon information from Dalton via Chris Pickford |
| 17 Dec 2014 | 3,4,5: (app)wt added; 1-6: turning,fr id added; frame info added | John Baldwin via database |