gptkb:The_Essential_Guide_to_Characters
The Essential Atlas
The Essential Guide to Alien Species
The Essential Guide to Droids
The Essential Guide to Planets and Moons
The Essential Guide to Vehicles and Vessels
The Essential Guide to Warfare
The Essential Guide to Weapons and Technology
The Essential Guide to the Force
The Essential Guide to Characters (New Edition)
The Essential Guide to Chronology
The Essential Guide to the Expanded Universe