Links of interest:

Jonathan Brown's Online-Discography of Tristan und Isolde:

http://www.tip.net.au/~jgbrown/Tristan/discography/index.htm

CDs of (not only) historical interest:

Marston http://www.marstonrecords.com

Truesoundtransfers http://www.truesoundtransfers.de

Journals:

The Record Collector http://www.therecordcollector.org

Singers:

Monsegur Vaillant http://www.adg-paris.org

Rebecca Copley http://www.rebeccacopley.com

Pamela Hoiles http://divapjh.com

Susan Marie Pierson http://www.susanmariepierson.com

Meta Seinemeyer http://www.seinemeyer.com A great site dedicated to the early deceased soprano

Dutch Divas http://www.dutchdivas.net One hundred years of Dutch Art of Singing

Frida Leider http://www.frida-leider.de/ The web page of the Frida Leider Gesellschaft in Berlin dedicated to the great soprano

Mara Zampieri http://www.marazampieri.com

Yamina Maamar http://www.yamina-maamar.de/

Photos:

Sandy's Opera Gallery http://www.cs.princeton.edu/~san/

How to find records, postcards and books:

British Library National Sound Archive http://cadensa.bl.uk/cgi-bin/webcat

Bibliotheque National de France http://www.bnf.fr

Zentrales Verzeichnis Antiquarischer Bücher http://www.zvab.com

Hanny Kopetz Wagner-Antiquariat Bayreuth http://hanny-kopetz.de/

Opera Internet Ressources:

La voce antica http://www.lavoceantica.it

Opera Broadcasts on the Internet http://www.operacast.com

Opera Ressources on the WWW http://opera.stanford.edu/links.html

Operabase http://www.operabase.com

Wagner Ressources:

Des Meisters Werk http://www.desmeisterswerk.ch

The Wagner Discography http://www.wagnerdiscography.com/