Best textbook/reference for rock music history?

I might be teaching a History of Popular Music: 1950-present class next semester at my former high school, and while I consider myself fairly knowledgeable about a variety of artists and styles...I have no idea what book I would use to teach from, or to order for the students to use themselves! I've looked on Amazon and found a few things, read the reviews and searched inside them, but they didn't really sit right with me; "A History of Rock Music, 1951-2000" by Piero Scaruffi and not even the Rolling Stone's Illustrated History or "Rock and Roll Year By Year" by Luke Crampton and Dafydd Rees looked like a possibility, but I'm not sure..I own Heatley's "Definitive Illustrated Encyclopedia of Rock", which might come in handy. I would of course also be playing albums, showing clips of performances and music videos and having them do independent research/listening I'm pretty jazzed about the possibility of educating young people about music history, so any suggestions are most welcome!