About the Environment:       http://www.foe.org (Friends of the Earth)       http://www.greenpeace.org/usa/ (Greenpeace USA)     http://www.nature.org/ (The Nature Conservancy)     http://www.nrdc.org/ (The Natural Resources Defense Council)     http://www.sierraclub.org/ (The Sierra Club)     http://www.treehugger.com/       About the Anthracite Region:   http://www.phmc.state.pa.us/   (Pennsylvania Historical and Museum Commission)     http://www.phmc.state.pa.us/bah/dam/overview.htm   (Pennsylvania State Archives)     http://www.schuylkillhistory.org/   (Historical Society of Schuylkill County, Pa.)       http://www.colcohist-gensoc.org/   (Historical Society of Columbia County, Pa.)       http://www.pioneertunnel.com/home.shtml   (Pioneer Mine & Tunnel, Ashland, Pa.)         About Coal Mining and The Sagebrush Rebellion:   http://www.osmre.gov/ (U.S. Office of Surface Mining)       http://www.depweb.state.pa.us/dep/site/default.asp   (PA Department of Environmental Protection, including the Office of Deep Mine Safety)       http://www.mountainstateslegal.org/   (Mountain States Legal Foundation)       http://www.nma.org/ (National Mining Association)         About Centralia Miscellany:       http://groups.yahoo.com/group/centcony/   (A discussion group devoted to the history and people of Centralia Borough and Conyngham Township, especially questions of historical and genealogical significance; registration required)       http://www.purevolume.com/dashfield   (Home of Dashfield, my younger brother’s band, with a tune called “Centralia”)