Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Mountaineers is an outdoor recreation and awareness group based in Seattle, Washington and is the third largest group of its kind in the country. It is a 501(c)(4) organization and has no restrictions on who may join. Its mission statement is: To be the premier northwest outdoor recreation club, dedicated to the responsible enjoyment and protection of natural areas. The club organizes hundreds of trips per year, has a large library and historical archive, teaches instructional courses, and advocates access and environmental causes. Originally a Seattle-based part of the Mazamas, a Portland based group founded in 1894, they formed their own branch shortly after the 1906 Mazamas Mount Baker expedition and dubbed themselves "The Mountaineers" with 110 charter members—nearly half women. The club constitution was officially adopted in 1907 by a membership of 151. Among these original members were Henry Landes (University of Washington geology dean), Edmond S. Meany (the father of the University of Washington Forestry school), the famous photographer Asahel Curtis, and Seattle photographer and North Cascades guide Lawrence Denny Lindsley.