All changes to tower
| Date | Change | Source |
|---|---|---|
| 20 Feb 2016 | 3 is cracked in crown | John Greenhough (JRK LBBF, 2009, p191; CBC) via e-mail |
| 3: cracked (in crown) | John Greenhough via e-mail | |
| 1,2,3: frameid added; frame info added | John Baldwin via database | |
| 2 Dec 2003 | Additional tower | John Cater via e-mail |