People interested in the history of video-games and in the material behind production may be intrigued by "Rogue Leaders: The Story of LucasArts" (Rob Smith)
I received my copy the other day and focused my attention on all this curious prototypes and documentation of game design. Maniac Mansion or Secret of Monkey Island meant a lot to me and it's refreshing to stay the history behind. The book is a thorough survey of a video game company with lots of concept art, character sketches, storyboards and timelines.
All these impressive maps and graphs were really an important component of game/level design at the time. Simply, because the game itself was really close to these elements; whereas today game levels are far different from the maze depicted above. It does not remove the value of this documentation and I am pretty sure there are lessons to draw from these.
Why do I blog this? an interesting book about Lucasarts game design practices, surely some insights to draw for my own research.