yes. It has excellent information that is kept up to date, and update sheets are often published to suppliment the book as new info is found. It can be bought at AES on Tropicana and Polaris, or at Radio World in Boulder City. I think it is like $15, but well worth the money. I have purchased 3 copies now (roomate thinks it is trash). I wouldn't have kept going back if I didn't feel it had good info in it.