NL Central: Burning questions of 2015
Chicago Cubs signed Jon Lester with DVD showing team winning World Series - Sports Illustrated
2015 NLDS, Cardinals vs. Cubs: Brandon Moss vs. Jon Lester - Athletics Nation
Cubs celebrate first NL Central title in 8 years – Macomb Daily
Jon Lester gives Cubs exactly what they needed in Game 5 victory – Orange County Register
Cubs decline to pick up the option for starter Jon Lester
A Souvenir for Anthony Rizzo, a Gift for All Cubs Everywhere - The New York Times
Why Cubs' early playoff exit is end of the road for core group that won 2016 World Series
MLB Rumors: Jon Lester has retired - Lone Star Ball
2015 Jon Lester Postseason Game Issued & Signed Chicago Cubs Home Jers – Heartland Sports Memorabilia
Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic
The puzzle of Cubs ace Jon Lester: He's hard to hit but easy to run on - Los Angeles Times
Postseason highlights and heartaches 2015 Chicago Cubs - ESPN