BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
Illustrations within the book were done by the artist named Patricia Wynne. The actual paper engineering by done by Ib Penick. This book was manufactured in Singapore.
The book briefly covers the major events of The Empire Strikes Back, in a vivid, pencil drawn, pop-out and interactive manner.