Not so much for kids - more just some Star Wars books that help illustrate some of the revisionism, contradictions, re-writing or mis-remembering of the history and evolution of Star Wars from George Lucas…
‘The Secret History Of Star Wars’ - by Michael Kaminski. Amazon link : OT.com Thread
‘The Making of Star Wars: The Definitive Story Behind the Original Film’ - by JW Rinzler. Amazon link : OT.com Thread
‘The Making of The Empire Strikes Back: The Definitive Story Behind the Film’ - by JW Rinzler. Amazon link : OT.com Thread
‘The Making of Return of the Jedi: The Definitive Story Behind the Film’ - by JW Rinzler. Amazon link : OT.com Thread
‘Star Wars Storyboards: The Original Trilogy’ - by JW Rinzler. Amazon link : OT.com Thread
‘Skywalking: The Life And Films Of George Lucas’ - by Dale Pollock. Amazon link
‘Once Upon a Galaxy: A Journal of the Making of The Empire Strikes Back’ - by Alan Arnold. Amazon link
‘Mythmaker: The Life and Works of George Lucas’ - by John Baxter. Amazon link
and whilst not a book, the illuminating various drafts of the Star Wars theatrical film scripts, at many different stages of development/shooting the film - at Starkiller: The Jedi Bendu Script Site
also this blog ‘From the Desk of Charles Lippincott’ - by Charles Lippincott, is well worth rummaging through.
Please let me know of any more similar books (or sites, blogs, articles etc) out there for inclusion - thank you 😃