I was sorry to read this.  Flynn was indeed a strong voice for Freethought.  My wife Carol and I visited sites on the Freethought Trail in NY a few years ago.  One memorable stop was the Robert Green Ingersoll Birthplace Museum, directed by Flynn.  I also have appreciated his commentary on Thomas Paine (see the excellent American Freethought videos), and work with the Center for Inquiry.  May many other voices carry on his important work.

Tom Flynn, Giant of American Freethought, Has Died at Age 66