All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Nov 2022 | GF added | Lucas Bent |
| 7 Jan 2018 | frame: historically important added | David Sloman via e-mail |
| 1 Jun 2017 | 1-3: turning,frameid added; 1,2: (app)wt added; frame info added | David Sloman via 00012181 |
| 25 Mar 2006 | TowerBaseID added | Tim Jackson#90 via e-mail |
| 9 Mar 2006 | Additional tower | Tim Jackson#89 (info: David Sloman) via e-mail |