• Calling Wild Places Home, SUNY Press, Excelsior Editions, 2024
  • Forest and Crag: A History of Hiking, Trail Blazing, and Adventure in the Northeast Mountains, Thirtieth Anniversary Edition, SUNY Press, Excelsior Editions, 2019
  • Starvation Shore, University of Wisconsin Press, 2019
  • The Green Guide to Low-Impact Hiking and Camping (with Guy Waterman – originally “Backwoods Ethics”: updated title and new foreword), Countryman Press, 2016
  • Losing the Garden: the Story of a Marriage, Shoemaker & Hoard, 2005
  • A Fine Kind of Madness: Mountain Adventures Tall and True (with Guy Waterman), Mountaineers Books, 2000
  • Yankee Rock & Ice: a History of Climbing in the Northeastern United States (with Guy Waterman; updated with four new chapters covering the 1990s through today, with Michael Wejchert, author), Stackpole Books, 1993, 2002, 2018
  • Wilderness Ethics: Preserving the Spirit of Wildness (with Guy Waterman), Countryman Press, 1993, 2014
  • Backwoods Ethics: A Guide to Low-Impact Camping and Hiking (with Guy Waterman), Countryman Press, 1993
  • Forest and Crag: A History of Hiking, Trail Blazing, and Adventure in the Northeast Mountains, Appalachian Mountain Club, 1989, 2003, 2011
  • Backwoods Ethics: Environmental Concerns for Hikers and Campers (with Guy Waterman), Stonewall Press, 1979, 1986