fix articles 18975, beyond coal
BTL: Sierra Club Secretly Took $26 million from Natural Gas Industry for Campaign Against (tags)
Interview with Bruce Hamilton, deputy executive director of the Sierra Club, conducted by Scott Harris
BTL:Bloomberg Philanthropies' $50 Million Gift to Sierra Club Expands Group's "Beyond Coal (tags)
Interview with Bruce Nilles, deputy conservation director at Sierra Club, conducted by Melinda Tuhus