All changes to tower
| Date | Change | Source |
|---|---|---|
| 24 Aug 2016 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 12 Jul 2006 | Tenor nominal added | Christopher Dalton (Dorset, p188) via pNBR |
| 23 Jul 2004 | u/r added | Nick Bowden#43 (from Dalton, Dorset) via e-mail |