All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Aug 2022 | Fr1A: layout added | Ranald Clouston papers 1978 via Neal Dodge |
| 2 Oct 2021 | URL amended | Tim Jackson |
| 17 Nov 2016 | fr1: date,maker,layout amended | Philip Denton via e-mail |
| 16 Nov 2016 | 1-6: turning added; fr1: truss added | Philip Denton via 00011848 |
| 29 May 2016 | fr1: date amended(to approx),maker amended(to probable) | Chris Pickford via e-mail |
| 28 May 2016 | fr1: maker amended | Philip Denton via e-mail |
| 27 May 2016 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 18 Jun 2007 | Tenor weight is precise not approx | Chris Pickford (Bowell records) via pNBR |