MUSIC REFERENCE AND BIBLIOGRAPHY

indexes. The only competition for Peter Ryom’s Antonio Vivaldi: Thematisch-systematisches Verzeichnis seiner Werke (RV) comes from ear-lier works by Ryom himself. These begin with his Verzeichnis der Werke Antonio Vivaldis, Kleine Ausgabe (Leipzig: Deutscher Verlag für Musik, 1974; revised ed., 1977) and continue with the collective source-study of unprinted materials Les manuscrits des Vivaldi (Copenhagen: Antonio Vivaldi Archives, 1977) plus the instrumental-music catalog called Répertoire des œuvres d’Antonio Vivaldi: les compositions instrumen-tales (Copenhagen: Engstrøm & Sødring, 1986). The first exposition of the RV num-bering system came in his Table de concor-dances des œuvres (RV) (Copenhagen: Engstrøm & Sødring, 1973). All of Ryom’s Vivaldi works (apart from translations into English of prefaces and introductions in the two later catalogues) are in French or German. The contents and main differ-ences between the three catalogs (hereafter cited as A, B, and C) are summarized i