In the event list for the Trading Journey if you click at the bottom on the link:
You can find more details on the events here
The link connected to HERE redirects you to the information about Kroffdors
http://warofdragons.com/info/library/index.php?obj=cat&id=96
Also, in the News Section about the Trading Journey the link at:
The participants of the expedtion also need provisions for their dangerous journey.
You can hand in resources and you will also get IOUs. You can find a comprehensive list of all the items you can exchange in the library.
IOU's in that sentence redirects to the german description
http://www.warofdragons.de/artifact_info.php?artikul_id=6073
So does the next IOU's link below that paragraf. Actually, 4 of the redirected links through the IOU's redirects to the german description.
Beuwolf