The 20 greatest home runs in Cubs history, No. 15: Sammy Sosa, September 13, 1998 - Bleed Cubbie Blue
The McGwire-Sosa home run chase helped make 1998 one of MLB's wildest seasons ever - ESPN
JAWS and the 2013 Hall of Fame ballot: Mark McGwire - Sports Illustrated
How Sammy Sosa came out of nowhere to jump into 1998 home run race – NBC Sports Chicago
1998: A Magical Season
McGwire vs. Sosa: The Great Home Run Race of 1998 – The Falcon Press
Tracking the Sosa-McGwire home run chase
Fans' bad blood still rages over Sammy Sosa's 1998 home run ball
Sammy Sosa's hot bat makes home run race interesting again - Sports Illustrated Vault
The McGwire-Sosa home run chase helped make 1998 one of MLB's wildest seasons ever - ESPN
The McGwire-Sosa home run chase helped make 1998 one of MLB's wildest seasons ever - ESPN