All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Apr 2017 | frame: maker,date added | John Baldwin via database |
| 16 Jun 2011 | 1-5: wt is pre canon removal | Philip Denton via e-mail |
| 1-6: frame id added; frame info added | John Baldwin via database | |
| 13 Jun 2011 | Pr: nominal added | Philip Denton via e-mail |
| 9 Jun 2011 | 1-6: nominal added | Philip Denton via 00009407 |