All changes to tower
| Date | Change | Source |
|---|---|---|
| 24 Jul 2013 | URL added | Alister Goodwin via e-mail |
| 11 Feb 2010 | Frame info amended (as per GAD ER Yks) | John Baldwin via database |
| 8 Feb 2010 | 1-6: frame id added; frame info added | John Arthur via 00008424 |
| 26 Sep 2004 | Slight change to dedication to match Crockford entry | Graham Nabb check via e-mail |