From the back: "The Solomani Rim contains sixteen pregenerated subsectors for Traveller, complete with subsector maps, word data, and background information. The Solomani Rim is an old and civilized sector, high in population and technological sophistication. It contains nearly 400 inhabited worlds, including Earth. The Solomani Rim forms the setting for many of the published Traveller adventures and makes an excellent background for any campaign."