At 3:30 in the morning, on July 15, 1932, 31-year-old Bob Marshall started walking. His goal: to see how many peaks in the Adirondack Mountains he could scale in one day. At 1 p.m., he met up with Herb Clark, an old family friend, at the summit of Mount Marcy, the highest mountain in the range. Clark was with a young architect named Paul Schaefer. More than 30 years later, looking back on the encounter, Schaefer could vividly recall his impression that Marshall's eyes "reflected a great joy for living."