Ben Hecht called him "White Fang," and director Charles Vidor took him to court for verbal abuse. The image of Harry Cohn as vulgarian is such a part of Hollywood lore that it is hard to believe there were other Harry Cohns: the only studio president who was also head of production; the ex-song plugger who scrutinized scripts and grilled writers at story conferences; a man who could see actresses as either "broads" or goddesses. Drawing on personal...