Join the Sierra Club for Ken Burns' Yosemite: A Gathering of Spirit, a documentary film produced to honor the 150th anniversary of the landmark federal act signed by Abraham Lincoln that preserved Yosemite Valley and the Mariposa Grove of giant sequoias. This act, the first time a government set aside land for public use and enjoyment, gave birth to the national park idea. This inspirational film brings to life an amazing time in America's conservation history. All welcome. Free. Info: Kirk Miller, 972-699-1687 or  KirkMiller@DallasSierraClub.org.