All changes to tower
| Date | Change | Source |
|---|---|---|
| 6 Jan 2011 | fr1,fr2: maker, material added; fr1: truss, layout added | John Baldwin via database |
| 4 Jan 2011 | 1-8: frame id added; frame info added | John Baldwin via database |
| 2 May 2006 | Tenor nominal added | Andrew Higson via e-mail |