Obama spent the six years between 1979 and 1985 in Los Angeles at Occidental College and then in New York at Columbia University and in the workplace. His memoir, "Dreams From My Father," talks about this time but not in great detail; Siddiqi, for example, is identified only as "Sadik" — "a short, well-built Pakistani" who smoked marijuana, snorted cocaine and liked to party. Obama's campaign wouldn't identify "Sadik," but The Associated Press located him in Seattle, where he raises money for a community theater. Together, the recollections of Siddiqi and other friends and acquaintances from Obama's college years paint...