Lettre d'Egon Wellesz à André Caplet, Vienne 20 mai 1923
Lettre de Egon Wellesz à Marc Pincherle, Vienne, 15 octobre 1926
Trésor de musique byzantine... par Egon Wellesz,...
Essays Presented to Egon Wellesz
Essays Presented to Egon Wellesz. Edited by Jack Westrup. [With Plates, Including a Portrait and Musical Illustrations.].
Egon Wellesz
Autograph Letter from Egon Wellesz, Oxford, England, to Harold Spivacke, Washington
Studies in the History of Music. Edited by Egon Wellesz
Egon Wellesz, Leben und Werk
Fux
Music of the troubadours;
Die neue Instrumentation... von Egon Wellesz. 1. Auflage
Egon Wellesz
Die neue Instrumentation. II. Teil : das Orchester, von Egon Wellesz
Zum 100. Geburtstag von Egon Wellesz
Ancient and Oriental Music. Edited by E. Wellesz. By Various Authors.
Die neue Instrumentation, , von Egon Wellesz...
Notes explicatives
The History of Music in Sound. General Editor: G. Abraham. [A Series of Booklets to Accompany Sets of Gramophone Records.]
Eastern Elements in Western Chant