(STC), Composite "Studio" Recording made up from more than one source
(SCE), Composite "Studio" Recording of Excerpts from more than one source
(LI), "Live" Recording
(LE), "Live" Recording of Excerpts
(LC), "Live" Composite Recording from more than one performance
(LCE), Excerpts from more than one "Live" Performance
(RA), A Radio Performance
(RE), Excerpts from a Radio Performance
(RC), Composite Radio Performance from more than one broadcast
(RCE), Excerpts from more than one broadcast performance
(FI), Film or/and sound track of a film
(FE), Excerpts of an opera from a film or/and the sound track of a film
CELLETTI, Il Teatro d'Opera in Disco by Rodolfo Celletti - Rizzoli - 1988
EJS Discography, EJS: Discography of the Edward J. Smith Recordings - The Golden Age of Opera, 1956-71 by William Shaman, William J. Collins, and Calvin M. Goodwin - GreenwoodPress - 1994
GIUDICI, L'Opera in CD e Video by Elvio Giudici - il Saggiatore Milano - 1995. Second Edition - 1999 - is indicated by (2)
HARRIS, Opera Recordings - A Critical Guide by Kenn Harris - David and Charles - 1973
MARINELLI, Opere in Disco by Carlo Marinelli - Discanto Edizione - 1982
MET, The Metropolitan Opera Guide to Recorded Opera - edited by Paul Gruber - Thames and Hudson - 1993
MET(VID), The Metropolitan Guide to Opera on Video - edited by Paul Gruber - W.W. Norton & Co. Ltd. - 1997
More EJS, More EJS: Discography of the Edward J. Smith Recordings by William Shaman - William J. Collins - Calvin M. Goodwin - Greenwood Press 1999
NEWTON (Verdi), Verdi - Tutti i libretti d'opera edited by Piero Mioli
PENGUIN, The Penguin Guide to Opera on Compact Discs by Edwin Greenfield - Robert Layton - Ivan March - Penguin Books 1993
Discos Gramófono (Barcelona), Compañía del Gramófono Sociedad Anónima Española
Gramófono (Barcelona), Compañía del Gramófono Sociedad Anónima Española