Niners LBs have esprit de corps
Next Bears Hall of Famers? What Bears fans need to know - Windy City Gridiron
Kaepernick, Strong Defense Help Establish 49ers Among NFL's Best In 2013 - CBS Pittsburgh
All-Pro Linebacker Patrick Willis Joins Rawlings Football's Advisors
Halil's NFL Top 100 Players of 2023: : r/nfl
NFL Rank - Predicting the best 100 players for the 2020 NFL season - ESPN
The Top 100 Players of 2013
Super Bowl 2013 Preview: Kaepernick third fewest starts of Super Bowl QB ever - The Phinsider
Zach Thomas a Hall of Fame finalist for fourth time
San Francisco 49ers 2013 roster review: Inside Linebackers - Niners Nation
Purdy: The worst day in 49ers history? – The Mercury News