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A typical Diana Walker moment is quite ordinary: a daughter showing her mother what she’s going to wear, a couple resting on a plane, or a man anxiously talking on his cell phone. Walker’s subjects, though, are far from banal. The daughter, an insecure, teenage Chelsea Clinton, opens a trench coat in the State Floor of the White House to see if her dress for the inaugural parade meets her mother’s approval. John Kerry slumps over Teresa Heinz Kerry in exhaustion, arms wrapped around her waist, as she reads aboard a campaign flight. That man on the cell phone, silhouetted against an Apple logo, is Steve Jobs—and he’s on the phone with Bill Gates. Walker’s professional life has been one of unprecedented access to our country’s decision-makers and famous names. A native Washingtonian, she covered the Ford administration in the ’70s and went on to chronicle the most private moments of every presidency until the end of Bill Clinton’s. His final photo as president is a somber one: He stands before a Town car with a stricken look on his face—a far cry from his other photos in the exhibit, where he laughs, smirks, and, in a series of the couple from a tour of Botswana, strokes his wife’s hair lovingly as it blows in the wind. Candid and private moments, of course, are where Walker is at her best, though the exhibit often focuses too much on catching our strait-laced politicians in a moment of laughter. Her somber photos—of Clinton or of Katharine Hepburn at the Kennedy Center, wiping away a single tear—are often more telling. The exhibition is on view from 11 a.m. to 6 p.m. Tuesdays through Saturdays, to Saturday, Dec. 1, at Addison/Ripley Fine Art, 1670 Wisconsin Ave. NW. Free. (202) 338-5180.