Why Whitey Herzog resigned as Cardinals manager
On July 6, 1990: Whitey Herzog quits as Cardinals manager
August 1, 1990: Cardinals name Joe Torre manager
Cardinals fire Mike Matheny after weeks of on, off-field reports - Sports Illustrated
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Mike Matheny - Wikipedia
Herzog's Path to Hall Began When He Left Mets - The New York Times
Cardinals fire manager Mike Shildt due to 'philosophical differences
Cardinals fire Mike Shildt over 'philosophical differences
Herzog resigns from Cardinals, wrapping up career
Top Five All-Time Cardinal Managers: Number 3 – Whitey Herzog – Interstate 70 Sports Media
Whitey Herzog
Cardinals fire Mike Shildt over 'philosophical differences
Tubbs Baseball Blog: Keith Hernandez, Whitey Herzog, and The Controversial Trade That Revived The New York Mets