Newtown shooter's reading list?

The search warrant for the home of Adam Lanza, who went on a murderous pre-Christmas rampage at Sandy Hook Elementary in Newtown, Conn., included some chilling items, including a New York Times articla about a 2008 school shooting. It also mentioned some books, which could have been Adam's or his mother's.

Here's the list:

-- "Train Your Brain to Get Happy" (with pages tabbed down)

-- "Look Me in the Eye -- My Life with Asberger's"

-- "Born on a Blue Day -- Inside the Extraordinary Mind of an Autistic Savant"

-- "NRA Guide to the Basics of Pistol Shooting"