All changes to tower
| Date | Change | Source |
|---|---|---|
| 30 May 2017 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 25 May 2010 | URL modified | Carolina Goodship via e-mail |
| 1 Nov 2009 | 1-5: nominal added | Nick Bowden via 00008243 |
| 22 Mar 2007 | Tenor nominal added (G+46c) | Alan Bagworth (info: JT&co) via pNBR |
| 4 Feb 2007 | URL added | Richard Wallis via e-mail |