Interesting thoughts on originalism by philosophy professor Bob Yanal at his blog Peregrinations: Originalism and Penumbral Cases and True Originalism and Magical Originalism.
And at Balkinization, more on the definition of originalism, in the series of posts inspired by Gerard Magliocca:
Ken Kersh: Anchor Originalism vs. Sail Originalism: An APD Take
Andrew Koppelman: Another Definition of Originalism
Posted at 7:00 AM