The Authorized Ender Companion

"The Authorized Ender Companion "is a complete and in-depth encyclopedia of all the persons, places, things, and events in Orson Scott Card's Ender Universe. Written by Jake Black under the editorial supervision of Card himself, "The Authorized Ender Companion "will be an invaluable resource for readers of the series.
If you ever wondered where Ender went after he left Earth, before he arrived at Lusitania, you'll find the answer here. If you ever wanted to know how the battle room worked, you'll find the answer here. If you forgot the names of the people who discovered the descolada, the answer is here. The history of Gloriously Bright's world? Here.
"The Authorized Ender Companion" contains all this and more. There are character biographies, time lines, colony histories, family trees, and numerous black and white illustrations.