The data for From Don to Giovanni was compiled from many different sources, including:

• The New Grove Dictionary of Opera
• Franz Stieger, Opernlexikon
• Clemens Grüber, Opern-Uraufführungen
• Pipers Enzyklopädie des Musiktheaters
• Kurt Gänzl, The British Musical Theatre
• Kurt Gänzl, The Encyclopedia of the Musical Theatre
• RISM Online Libretto Database
• Istituto Centrale per il Catalogo Unico (Italy) <http://opac.sbn.it/cgi-bin/IccuForm.pl?form=WebFrame>
• GBV Union Catalogue (Germany)
• British Public Library Catalogue <http://catalogue.bl.uk>
• Österreichischer Bibliothekenverbund: Gesamtkatalog <http://www.onb.ac.at/kataloge/index.htm>
• Swiss National Library: Helveticat
• National Library of Sweden <http://www.kb.se/eng/kbstart.htm>
• Koninklijke Bibliotheek (Netherlands) <http://www.kb.nl>
• Bibliothequè royale de Belgique/Koninklijke Bibliotheek van België <http://www.kbr.be>
• Det Kongelige Bibliotek (Denmark) <http://www.kb.dk/formidl/index-en.htm>
• Estonian Libraries' Catalogue <http://helios.nlib.ee/search>
• National Library of the Czech Republic <http://www.nkp.cz/altnkeng.htm>
• Biblioteca Nacional (Spain)
• Biblioteca Nacional (Portugal) <http://sirius.bn.pt/sirius/sirius.exe>
• Australian Music Centre <http://www.amcoz.com.au/cgi/amccgi.exe>
• National Library of Canada/Bibliothèque nationale du Canada <http://www.amicus.nlc-bnc.ca/wapp/resanet/searche.htm>

Many additional sources were consulted, including published monographs and catalogs of various types. The database currently includes data up to 1995.

The database was authored by Richard Parrillo, and first published on CD-ROM by Sibylline Books in 1997. This web version was developed by the UCLA Music Library. The database was last updated on September 4, 2001.

Please send corrections and comments to the webmaster.