I've updated the Flipper section on my Legspin blog, there's still quite a bit of work to do to it - illustrations, photo's and checking of some of the references and details.
http://legspinbowling.blogspot.com/search?updated-min=2010-01-01T00%3A00%3A00-08%3A00&updated-max=2011-01-01T00%3A00%3A00-08%3A00&max-results=8
