Hal Leonard Rubank Advanced Method for Trombone Baritone Vol 2

Rubank Advanced Method - Trombone Or Baritone, Vol. 1

Rubank Elementary Method - Trombone Or Baritone

Rubank Advanced Method - Trombone Or Baritone, Vol. 1

Rubank Advanced Method Trombone or Baritone Book Vol 1 by Gower & Voxman

Rubank Advanced Method - Cornet Or Trumpet, Vol. 2

Rubank Advanced Method - Trombone or Baritone, Vol. 2 (1989, Paperback)