Thank you for the review. The only non-musical Gilbert I've seen staged
was his one act "Rosencrantz and Guildenstern" that the Lamplighters
performed as a curtain raiser. That production stands in my memory as
one of the funniest things I've ever seen and heard. Here's a link to
info about that short play and a script:
http://math.boisestate.edu/gas/other_gilbert/html/rosen.html

That reminds me that this same G&S site includes PDf files of the score
of Sullivan's opera "Ivanhoe", which I keep forgetting to print after
downloading from:
http://math.boisestate.edu/GaS/other_sullivan/ivanhoe/score/index.html