All changes to tower
| Date | Change | Source |
|---|---|---|
| 30 Nov 2019 | 1: wt added | Tim Jackson via e-mail |
| 16 Jul 2010 | Fr1: truss added; layout amended | James Clarke via e-mail |
| 14 Sep 2009 | Tenor note not E; nominal: Eb+34c | Nick Bowden (John Cater/Gill Hughes recording June 09) via pNBR |
| 1-6: nominal added | Nick Bowden via 00008088 | |
| All frame id added; frame info added | John Baldwin via database |