Llorens Cisteró, José Maria. 1969. The Musical Codexes of the Sistine Chapel Written Through the Generosity of the Pauline Popes. Studies in Musicology: Essays in the History, Style, and Bibliography of Music in Memory of Glen Haydon, 18-50. Chapel Hill, N.C.

Haydon, Glen. 1962. The Case of the Troublesome Accidental. Natalícia Musicologica Knud Jeppesen, 125-9. Copenhagen.

Haydon, Glen. 1960. The Dedication of Francesco Corteccia's Hinnario. Journal of the American Musicological Society, 112-6.

Haydon, Glen (editor). 1958-60. Francesco Corteccia: Hinnario Secondo l'Uso della Chiesa Romana et Fiorentina. Musica Liturgica. 

Haydon, Glen. 1958. The Lateran Codex 61. International Musicological Society: Report of the 7th Congress, Cologne 1958, 126-31.