David N. Baker's Contemporary Techniques for the Trombone is a comprehensive 6 volume series covering the skills, techniques, and basic tools of the aspiring jazz trombonist. Each volume covers a specific topic.
Volume 1 - Foundation Exercises for the Jazz Player - Vibrato and other Special Effects Tod-ul Tongue
Volume 2 - Against the Grain Playing - Scales and Chords
Volume 3 - The II V 7 Progression - Turnbacks & Cycles
Volume 4 - A Method for Gaining Facility with the Various Scales - Scales, Multiphonics & Polytonality
Volume 5 - Rhythm and Meter - Polymetric & Multimetric Melodies - Fourths
Volume 6 - Exercises Based on the 12 Tone Row - Use of Dramatic Devices - Micro Tones