What drum books do you folks feel are the essentials? I would say of the ones I have:
Advance Techniques for the Modern Drummer
The Double Bass Encyclopedia
Both Joe Morello Master Studies
I can tell you about books I use, but I'm not sure I'd call them "essential" - just the things I have chosen to work on.
Definitely pay close attention to what Jeff says!!!
Claus Hessler and Dom Famularo "Open Handed Playing Vol. 1"
Gary Chester "The New Breed"
Thomas Lang "Creative Control and Coordination"
Peter Erskine "Drumset Essentials" (all three volumes - I use this with new students)
John Riley "The Art of Bop Drumming"
Johnny Rabb "Jungle/Drum 'n' Bass for the Acoustic Drum Set"
I've gotten a lot of practice and teaching mileage out of:
Stick Control b. Stone Syncopation b. Reed Drum Set Warm Ups b. Morgenstein Syncopated Rolls for The Modern Drummer b. Blackley Master Studies b. Morello The Essence of Jazz Drumming b. Blackley Technique Patterns b. Chaffee Time Functioning Patterns b. Chaffee Mastering the Tables of Time b. Stanoch Groove Essentials I b. Igoe Portraits In Rhythm b. Cirone
And my pet project at the moment is going through Dicenso's Universal Rhythms. As far as I'm concerned, he hit it out of the park.
I've got tonnes of others and I've dipped in and out of all of them at various points. There are so many good books on the market - maybe too many! - I think the real trick is to pick one or two and actually go all the way through them in as much depth as you can muster.
I think all the books mentioned so far are essential. The most important part though, is that you know how to use them and have a healthy and musical approach to your practice.
My own method is really to take all these books and combine them into my own routine. That way I will eventually cover everything in a deep musical way that actually benefits my musicality and makes everything very useful to me.
For more information on basic training I'd add the Unreel Drum Book and the Benny Greb DVD. With a little creativity pluss all the books mentioned so far you sort of got it covered.
I would still get more material for inspiration and style specific advice, offcourse.