All changes to tower
| Date | Change | Source |
|---|---|---|
| 25 Jun 2020 | 5,6: founder amended | David Sloman via 00013864 |
| 24 Jun 2020 | 1-6: frameid added; fr1: details added | Tim Jackson via e-mail |
| 24 Apr 2007 | Tenor note not G#; nominal added (G+41c) | GAD NBR spreadsheet via pNBR |