The Yankees-Red Sox Rivalry's Dividing Line - WSJ
Old-school fighting spirit returns to Yankees-Red Sox rivalry - The Boston Globe
New York Yankees, Boston Red Sox rivalry through the years
The Origins of the Red Sox & Yankees' Rivalry – The Regional
Roots of Boston Red Sox-New York Yankees baseball animosity
Yankees vs. Red Sox: History of MLB's biggest rivalry in postseason, elimination games
Yankees–Red Sox rivalry - Wikipedia
Yankees 4-2 Red Sox (Oct 14, 2003) Final Score - ESPN
The Yankees Vs. Red Sox Rivalry: Exploring Since Its Start
New York Yankees, Boston Red Sox rivalry through the years
Yankees vs. Red Sox: History of the rivalry
Yankees–Red Sox rivalry - Wikipedia
Yankees-Red Sox rivalry went from hatred to RE2PECT and back
A Game-by-Game History of the Rivalry between the Yankees and Red Sox - Baseball Egg