Martin Siegel, the youngest member of the class just graduated from the Harvard Business School, reported for work at Kidder, Peabody & Co.'s Manhattan headquarters at 20 Exchange Place in August 1971. That morning, the 23-year-old Siegel wandered through the halls looking at the portraits of Henry Kidder, Francis Peabody, Albert R. Gordon, and others that hung above the Oriental rugs and slightly threadbare carpets. Siegel tried to absorb the images of this strange and rarefied world of old money and discreet power.
He didn't have much time for reflection. He and his new wife hadn't even unpacked before he was...