Phillips, Lois - Theory
Produced for the Rural Music Schools Association, this classic text provides a firm foundation for the development of aural training for performers or teachers of music.
Pilling, Dorothy - Harmony
Pilling, Dorothy - Harmony Out of print: available on demand
This pamphlet by famous childrens composer Walter Carroll is an interesting historical document containing advice on musical theory for pupils preparing for exams.
Harris, Cuthbert - Theory
Lambert, Cecily - Theory
Stewart, Elsie - Theory