Lou Whittaker

Lou Whittaker (born February 10, 1929) is an American mountaineer, mountain guide, and businessman. He and his twin brother, Jim Whittaker are known mountain climbers.
Known for his mountain climbing experience, Whittaker became the most experienced glacier-travel guide by climbing Mount Rainier with over 250 summits. He created Rainier Mountaineering, developed a group of successful climbing-related businesses. He also led the first American ascent of the North Col of Mount Everest in 1984.
He has also written about his experiences in "Lou Whittaker - Memoirs of a Mountain Guide".