As I promised last week, here are several handouts and exercises from a drum clinic with Ed Shaughnessy. If memory serves, I think I picked these up from a workshop he gave in Banff around 1992-1993 or from a Bands of America drumline competition circa. 1994 (?)
Anyways, as you can see, there is a lot of good and very practical information to practice here...
There is also a nice article on Shaughnessy's career over at Jazz Profiles: