All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Sep 2017 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 9 Mar 2007 | u/r added | Paul Cattermole via e-mail |
| 17 Dec 2003 | Tower is round | Nick Bowden#36 (Cattermole, CB Norfolk) via e-mail |
| 9 Dec 2003 | Additional tower; Crockford & OS checked | Colin Turner's 3-bell lists via JCB |