All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Feb 2019 | 1,2: frameid added; fr1: truss added; fr1A: info added | Tim Jackson via e-mail |
| 3 May 2016 | 3-8: frameid,turning added; frame info added; Sct: added | John Baldwin via database |
| 7 Aug 2006 | Tenor nominal added (F#-5c) | Mike Chester #1190 via pNBR |