These two presentations were later merged into the opening presentation at HydraCamp 2010.
An overview of the Vision and Implementation of the Hydra Framework — from HydraCamp 2010 (slides, Octover 2010)
Designing, Building, and Releasing the HydraFramework: laying a foundation for the deep web and the golden age of digital libraries
Matt’s alternative presentation on Hydra for Ruby Users of Minnesota September 2010. (slides, Sept 2010)