George Marshall (1904 - 2000) and Bob Marshall (1901 - 1939) were brothers known for their conservationist efforts. The Marshall brothers’ father, Louis Marshall, a prominent constitutional lawyer, was co-owner of the Knollwood Club, an Adirondack Great Camp on Lower Saranac Lake. The Marshall brothers spent much of their youth exploring the Adirondack region, which inspired them to create the challenge of climbing all 46 of the Adirondack high peaks. Forty-sixers are hikers who have climbed all 46 of high peaks. The Marshall brothers and their family friend and guide, Herbert Clark are the original Adirondack High Peak “46ers”.