Bears LB Urlacher announces his retirement - The San Diego Union-Tribune
Lids Brian Urlacher Chicago Bears Nike Game Retired Player
Bears linebacker Urlacher retires after 13 seasons - Eurosport
Lids Brian Urlacher Chicago Bears Nike Game Retired Player
Former Bears linebacker Brian Urlacher retires
Chicago Bears Countdown to Kickoff: 54 Days with Brian Urlacher
NFL coaches, players share admiration for Urlacher
Greatest Chicago Bears Seasons: Brian Urlacher 2007 - Windy City Gridiron
Intelligence, athleticism helped make Urlacher a Hall of Fame linebacker
Brian Urlacher officially announces retirement from the NFL - Windy City Gridiron
Chicago Bears: Brian Urlacher heads out the door – Twin Cities
New Mexico Football Stadium May Be Named For Brian Urlacher - CBS Chicago
Chicago Bears - Wikipedia
Chicago Bears' long lineage of linebackers