Alfred Music Publications
The Complete Mandolin Method by Greg Horne

This jam-packed mandolin method continues in its final installment with a study of advanced harmonies and chord forms in all 12 keys. Also covered are chord/melody playing, chord substitution, and forms such as the 12-bar blues and "Rhythm Changes."

In addition, the book takes an exhaustive approach to melodic studies, touching on the modes of the major scale, the pentatonic scales, the chromatic scale, the whole-tone scale, and improvisation.