I just finished reading an excellent book that I'd like to recommend. It's called Sun, Sin & Suburbia by Geoff Schumacher.
The book is what he calls 'An Essential History of Modern Las Vegas'. The book covers development of various Las Vegas Valley areas such as Summerlin and Green Valley, the cities of Las Vegas, Henderson and North Las Vegas and even the recent hi-rise condo market.
What is great is that the book is very easy to read and it is clearly written by someone with a deep understanding of Las Vegas.
If you are interested in Las Vegas history, you shouldn't miss this book.