Ghosts of Forests Past: Bark Beetles Kill Lodgepole Pines, Affecting Entire Watersheds Outlet: 28 Jun, 2013 Co-authors, in addition to Maxwell, are Kristin Mikkelson, Lindsay Bearup, John McCray and Jonathan Sharp of the Colorado School of Mines, and John Stednick of Colorado State University. Mikkelson is the paper’s first author. link