From the company web page:
Seal of the Imperium 2:1 is a 200+ page journal filled with valuable information about M.A.R. Barker’s world of Tékumel and gaming in that world. The book contains an assortment articles concerning Guardians of Order’s Tékumel: Empire of the Petal Throne role playing game, an article with plot ideas for Tékumel-based role-playing games, an account of the being in the Slave Pits of Béy Sü, a description of part of the 'Other Side' of Tékumel, items from the files of the Omnipotent Azure Legion, Tsolyáni funeral rites, and a discussion of the mathematics of the Five Empires as well as interview with M.A.R. Barker and a complete board-based Tékumel wargame.
Table of Contents
Tekumel: Empire of the Petal Throne (T:EPT)
Introduction to Tekumel or "The Ballad of Portable Memory Core 5", 1
Shaman Magic, 12
Good Stuff — Resource Packages for T:EPT, 19
To There – Converting to T:EPT, 31
And Back Again – Converting Back to EPT, 37
And Again – Converting Back to S&G, 48
Converting Creatures, 61
Tlakteyal chaluGardasiyal: Along the Sakbe Road, 66
Terra Incognita: The "Other Side" of Tekumel, 72
Slave Pits of Bey Su, 81
From the Files of the OAL
No Survivors, 89
The Gij & Sons Auction, 101
Before the TIme of Darkness,105
Tsolyani Funeral Rites
For a Follower of Hnalla, 110
For a Follower of Karakan, 111
For a Follower of Thumis, 112
Mathematics of the Five Empires, 114
Tekumel 302: Intermediate Studies, 125
Battle Kibitzers' Guide #2, 131
Missumdalikoi, 132