All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Jun 2018 | PN info added | Nick Churchman via e-mail |
| 29 Oct 2016 | 1-5: frameid added; frame info added | John Baldwin via database |
| 15 Feb 2012 | 3: historically important | David Knight via e-mail |
| 14 Jun 2006 | Tenor nominal added (A-8c) | Andrew Higson via pNBR |
| 17 Feb 2004 | Dedication not simply Mary | Graham Nabb's Crockford reconciliation via e-mail |