All changes to tower
| Date | Change | Source |
|---|---|---|
| 15 Aug 2020 | fr1: truss,layout added; 1: frameid amended | Tim Jackson via e-mail |
| fr2: material amended,date,maker,truss added; fr2 >> fr1A | Tim Jackson via e-mail | |
| 16 Oct 2017 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 31 Dec 2011 | PN has changed (from Thu) to Wed | Mary Stephens, Tower Secretary via e-mail |
| 15 Dec 2011 | 5: date is approx; postulated founder added | Philip Denton via e-mail |
| 13 Mar 2011 | Note added about 5th being heavier than tenor | Tim Jackson#172 (pNBR data) via e-mail |
| 6 Oct 2005 | Tenor nominal added | George Dawson via e-mail |