Washington Trails Association
WTA first began with publishing Signpost, a grassroots magazine started in 1966 by the late guidebook author Louise Marshall. The late hiking guidebook author Ira Spring co-founded WTA, serving on its board of directors from 1982 until his death in 2003. WTA still publishes a magazine for hikers, now under the name Washington Trails. In 1993, WTA's former executive director, the late Greg Ball, launched the organization's volunteer trail maintenance program, completing just 250 hours of trail work on public lands. In 2016, WTA logged 150,000 hours of trail maintenance by 4,700 volunteers on National Parks, National Forest, and state lands.
- The Everett Herald (August 16, 2008). "A mountain named Spring"
- Washington Trails
- The Seattle P-I (October 20, 2004). Greg Ball, 1944-2004: Trail-building inspiration across state