All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Feb 2020 | 1-7: nominal added | Tim Jackson via e-mail |
| 24 May 2010 | Frame: truss, layout added | Sam Austin via e-mail |
| 22 May 2010 | 1-8: canon info,frameid added | Sam Austin via 00008648 |
| Frame info added | John Baldwin via database | |
| 16 Sep 2008 | PN is not Fri but Tue | Sam Austin via e-mail |
| 28 Dec 2006 | Tenor nominal added (Ab-3c) | Andrew Higson via pNBR |