Georgia O'Keeffe, one of the most original painters America has ever produced, left behind a remarkable legacy when she died at the age of ninety-eight. Her vivid visual vocabulary -- sensuous flowers, bleached bones against red sky and earth -- had a stunning, profound, and lasting influence on American art in this century. O'Keeffe's personal mystique is as intriguing and enduring as her bold, brilliant canvases. Here is the first full account of...