You should regularly check the Classified & Camps/Clinics page because there are always new listings. The latest are:
Berks Multi-Event Championships - Deadline of June 18th
Fiber Benders International Pole Vault Camps
Future Champions 2005 Camp Throwers, Chuckers & Puters
Future Champions 2005 Camp Jumpers, Hurdlers, & Sprinters Summer Camp
Camps & Clinics page on PennTrackXC.com