You theater buffs out there are gonna love this site: It's called "Down Under in the 19th Century" — a fascinating chronology of theater in Australia, skillfully, humorously and lovingly told.
This site is much, much more than Gilbert & Sullivan, but I thought you'd be interested in one of their illustrations — an early Pirates of Penzance poster.
I urge you to surf on over to:
You probably won't be able to finish it in one sitting, and even if you do, you'll want to go back to it. I guar-on-tee.
Stage Whispers is published by carlacushman.blogspot.com/