Without Papa Bear O'Reilly around, the War on Christmas just isn't as fun as it used to be.
Weirdly it was his colleague, The Gibbers, who actually "wrote" (put his name on) The War On Christmas book. I never saw confirmation of this, but I always suspected that it was supposed to be a Papa Bear book but it was scheduled to come out not too long after his Mackris troubles so they switched the name.