All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Sep 2020 | 4: canon info amended | Adam McCurdy via e-mail |
| 30 Oct 2017 | Tenor wt is not precise | TimJ (DrL info) via e-mail |
| 6: wt amended (to approx) | Tim Jackson via e-mail | |
| 9 Oct 2017 | frame: material,truss,layout added | Mike Chester via e-mail |
| 19 Jan 2014 | 4,5: app wt added | John Baldwin via database |
| 18 Jan 2014 | 4: historically important, canon info added; 1-6: frame id added; | Philip Denton via e-mail |
| frame info added | Philip Denton via e-mail | |
| 14 Aug 2007 | Tenor note not A; nominal: Ab-26c | Bill Hibbert nominals (PGD) via pNBR |
| 5 Jan 2004 | URL amended | Dickon Love via e-mail |