This article examines school shootings committed by men at least 25 years old: Marc Lépine, Kimveer Gill, Steven Kazmierczak, and Jiverly Wong.

This is the official report on Steven Kazmierczak, the attack, and the university's response.

This document contains information about the archive of materials related to the shooting at Northern Illinois University, including a form to be completed by researchers interested in accessing the archive.