| 2018-01-20 10:04:46 | ltk_tscc | Added credit for Jack on Spectrum 512 Slideshow: Graphics, Other (Scanning) |
| 2018-01-20 09:59:53 | ltk_tscc | Added nick 'Jack' |
| 2018-01-20 09:51:59 | ltk_tscc | Added credit for Jacek Strzalkowski on Digital Studio V0.99: Graphics |
| 2018-01-20 09:51:49 | ltk_tscc | Added nick 'Jacek Strzalkowski' |
| 2018-01-20 09:40:31 | ltk_tscc | Set real name |
| 2016-04-19 07:19:43 | TheCollector | Added credit for Jack Strzalkowski on Soundtracker Disk 2.0 intro: Graphics (Fonts) |
| 2016-04-19 07:18:17 | TheCollector | Added credit for Jack Strzalkowski on Gigascroll Demo: Graphics |
| 2015-02-28 15:58:46 | erOS | Edited nick 'Jack Strzalkowski': changed name to 'Jack Strzalkowski' |
| 2014-08-20 11:14:51 | ltk_tscc | Set location to Poland |
| 2014-08-20 11:14:32 | ltk_tscc | Added Jack as a member of The Supervisors |