Mexico Under Siege, The Los Angeles Times
Mexico Drug Cartel Territory, National Public Radio
Executions and Organized Crime During Calderon’s Administration,
Mexico's drug wars: interactive map,
Drugs in Mexico: Kicking the Hornets' Nest, The Economist
Drug Violence Dataset & Reports Justice in Mexico Project, Trans-Border Institute at the University of San Diego

Official Documents:

Mexico's Drug Trafficking Organizations: Source and Scope of the Rising Violence, June S. Beittel, January 7, 2011


Trans-Border Institute Releases Report on Drug Violence in Mexico, Trans-Border Institute, February 7, 2011
Special Report: Mexico at War, The Washington Post