Yosemite National Park will celebrate the 50th anniversary of the Wilderness Act and the 30th Anniversary of the California Wilderness Act on Wednesday, September 3, 2014. Special events will take place throughout the day in Yosemite Valley and are designed to honor and celebrate the signing of these two acts, engage the public to better understand and appreciate wilderness, bring wilderness conservation organizations together, and connect with today’s youth and non-wilderness users. http://www.nps.gov/yose/learn/news/yosemite-national-park-conducts-sierra-wilderness-celebration.htm