All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Feb 2019 | partials added | Nick Bowden via e-mail |
| 29 Jul 2018 | GF added; 'minor key' descripn changed: closer to diatonic | TimJ pNBR #13005 via pNBR |
| 1-5: nominal,turning added | Tim Jackson via 00013005 | |
| 2 Feb 2018 | 1,2,4: (app)wt,diam added; 2,3,4: canon info added | Chris Pickford via 00012737 |
| 1 Feb 2018 | 3: wt,diam added | David Sloman via 00012731 |
| 7 Nov 2015 | 1-5: frameid added; frame info added | Mike Chester via e-mail |
| 25 Jan 2004 | URL changed | Gary J Sheppard: SDGR webmaster via e-mail |
| 8 Jan 2004 | URL added | Gary J Sheppard: SDGR webmaster via e-mail |