This is a reference manual that offers a glimpse of the Battletech universe that updates the timeline frm 3030 to 3050. It has a wealth of information that can be used in the Mechwarrior RPG as well as good backgroud information for the Tabletp skirmish Battletech game. It has a section on the histor of the last 20years, as well as a chapter on each ruling 'house' and a chapter on the major personalities of hte era.