From publisher blurb:
The French Arm is the most heavily-settled branch of human exploration and expansion, running from Earth though the link at Wolf 359 and extending all the way up to the Wolf Cluster and Kaefer space, with the colony world of Aurore being the furthest, and most recent, permanent settlement.
The Atlas of the French Arm coves all the worlds and colonies within this immense region of space, including the history of its exploration, the wars that have erupted along its length, and the new dangers that are just beginning to be uncovered at its furthest, darkest reaches.
The perfect companion to French Arm Adventures, Atlas of the French Arm is a complete campaign setting for 2300AD that provides enough material to keep players and referees going for months.