Police also found a 2008 New York Times article about a shooting at Northern Illinois University.

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After the shooting at Northern Illinois University last week, students on campuses across the country are wondering whether they are safe.

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The haul from the suspect's home included books two books on mental health "Look Me in the Eye: My Life with Asperger's" and "Born on a Blue Day: Inside the Mind of Autistic Savant" and a pistol-shooting guidebook published by the NRA. Investigators also found a New York Times article published Feb. 18, 2008, on a school shooting at Northern Illinois University.

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