All changes to tower
| Date | Change | Source |
|---|---|---|
| 24 Jul 2022 | URLs & toilet added | NDAR website |
| 11 Oct 2019 | 1-5: nominal added | Tim Jackson via e-mail |
| 17 Feb 2012 | 5: historically important | David Knight via e-mail |
| 12 Dec 2010 | 1-5: frameid added; frame info added | John Baldwin via database |