He was tall and stunningly good looking, a guy who could appear pensive and serious one moment and then, with smoke from an unfiltered cigarette swirling around his face, morph into the hippest looking dude this side of James Dean. Which is why budding photographer Lisa Jack knew the moment she saw Barack Obama walk into the campus snack shop at Los Angeles' Occidental College in 1980 that she had to get the freshman in front of a camera. "I was doing portraits of fellow students, the cool people on campus," Jack, a slender, 49-year-old bundle of energy, recalled this...