Dr. Turner recommends these books; they will be either on the uipper level available for checkout, or on reserve at the circulation desk (check the library's catalog or ask a librarian if you can't find them).
The New Grove Dictionary of Music and Musicians
The Oxford History of Western Music by 
History of Western Music by 
The Harvard Dictionary of MusicTIPS:
Music & Books on Music:
The Cambridge History of Twentieth-Century Music by More books recommended by Dr. Turner. If the title of the book is blue, click it to view the online version of that resource:
Music of the Twentieth Century: Style and Structure by 
Music of the Twentieth Century: An Anthology by 
Understanding Post-Tonal Music by 
Music of the Twentieth-Century Avant-Garde: a Biocritical Sourcebook. by 
Modern Music and After by The Harvard Dictionary of Music
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