From the credits:
Tiffany Star is a bi-monthly amateur periodical published in support of the History of the Imperium Working Group (HIWG).
GDW and DGP product news.
Encouragement to join GENIE, Second Survey and related HIWG opportunities, HIWG Pubs.
A sector map circa 1120.
A timeline of the Vargr invasion during the Rebellion.
Campaign rules for the Rebellion.
Org charts for Rebellion faction governments.