Gilbert and Sullivan Archive
"...devoted to the operas and other works of William S. Gilbert and Arthur S. Sullivan, and to other light operas of the late 19th and early 20th centuries...including clip art, librettos, plot summaries, pictures of the original G&S stars, song scores, midi and mpeg audio files, and newsletter articles. New items are being added regularly."
The link address is: http://diamond.boisestate.edu/gas/