All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Dec 2022 | 3: weight amended | Whitechapel records via David Sloman #004257 |
| 25 Feb 2016 | NHLE Listing Grade amended from II to II* | TimJ via e-mail |
| 3 Jan 2011 | Clk: founder amended | Nick Bowden via e-mail |
| 10 Jul 2010 | All: frame id added; frame info added | James Clarke via e-mail |
| 27 Sep 2004 | Dedication (since 1st edn!) of All Ss wrong | R Haines (conf'd by Bayton & Pascoe, and Dalton) via e-mail |