History of baseball in the United States - Wikipedia
Jim Bouton, Baseball Wiki
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Ball Four - Wikipedia
Ball Four at 50 and the Legacy of Jim Bouton. - Document - Gale Academic OneFile
New! Baseball's Jim Bouton and “Ball Four” at the Library
Ball Four: The Final Pitch: 9781630260347: Bouton, Jim, Kurman, Paula: Books
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History of baseball in the United States - Wikipedia
Folkrocks Author Richie Unterberger's views on vintage rock music; San Francisco Bay Area biking and hiking; socially responsible living; and baseball.
Ball Four at 50 and the Legacy of Jim Bouton. - Document - Gale Academic OneFile
Ball Four – Society for American Baseball Research