200
I spend HOURS reading these as a kid
(hexbear.net)
Fuck iPads, having kids look at glossy pieces of paper with diagrams of castles and pictures of cool pirate swords is what the children need.
I had the visual dictionaries when they started with The Phantom Menace. There were also books with super detailed schematic illustrations of all the ships in the series. The Death Star section had a double fold out to fit everything in