Here are the stories of Annie Smith Peck, the most famous woman mountaineer of her time, who climbed the highest peak in Peru when she was sixty; of Delia J. Akeley, the first woman to lead a museum expedition, who traveled across Africa collecting big game specimens and lived with Pygmy tribes; of Marguerite Harrison, an American spy arrested and sent to the infamous Lubianka prison in Russia, who later filmed the pilgrimage of a nomadic Persian tribe; and pf Louise Arner Boyd, who conceived, financed, and led seven scientific explorations to the icebound coast of Greenland.