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Occasionally, like an aging but still truculent eagle, San Francisco's Banker Amadeo Peter Giannini feels an urge for solitude, flaps eastward to survey his Pacific Coast empire from a distance. In the past these vigils were often disturbed by the sight of an enemy and Giannini's instinct for plummeting into violent battle. But last week in Palm Beach the 75-year-old Giannini sunned his scars in peace, lazily observed the movements of lesser birds, and gazed west with a benevolent softening of his hooded eyes.
The big, white-haired, white-mustached founder of...