Music Theory in 1987

Norton Manual of Music Notation by Heussenstamm, George

Source Book of Proposed Music Notation Reforms by Read, Gardner

Structural Functions in Music by Berry, Wallace T.

The Study of Fugue by Mann, Alfred

Alfred's Basic Piano Library Fun with Modes, Bk 3 by Manus, Morton, Lethco, Amanda Vick, Palmer, Willard A.