| 2019-10-20 07:59:56 | sensenstahl | Edited notes |
| 2019-10-20 07:56:29 | sensenstahl | Updated link http://www.sensenstahl.com/untergrund_mirror/bbs/silent_services_hq_bbs4a.zip |
| 2019-10-20 07:56:25 | sensenstahl | Set title to 'Silent Services HQ BBS (4a)', author to 'None', release date to 1991 |
| 2017-12-16 13:15:32 | sensenstahl | Set title to 'Silent Services HQ BBS (4)', author to 'None', release date to 1991 |
| 2017-12-02 16:46:48 | sensenstahl | Added link https://www.pouet.net/prod.php?which=72513 |
| 2017-12-02 16:43:46 | sensenstahl | Added screenshot |
| 2017-12-02 16:43:41 | sensenstahl | Added production 'Silent Services HQ BBS' |