The opportunity to write a detailed guide to Isle Royale and to lead a field trip comes from the cooperation of many people. Lori Witting did the planning and financing issues for the trip. Mark Klawiter planned the food and field logistics. Erika Vye and Bob Barron helped with numerous details. Guy Meadows of the MTU Great Lakes Center helped make the trip a success.

Rolf Peterson generously spent two days with us, and greatly enriched our knowledge of Isle Royale. I would like to thank Lucas Westcott, Liz Valencia and Greg Bickings of Isle Royale National Park for permitting and helping plan this field trip.  Steve Roblee was an eager boat pilot. Kim Alexander helped with facilities of the Rock Harbor Lodge.

King Huber provided us with a complete set of his many publications about Isle Royale and also with lots of cheerful encouragement. Jim Paces, Tony Longo, and Rick Wunderman provided me with a lot of insight on the volcanic geology of Isle Royale. Kate Witthuhn-Rolf supplied some unpublished data. Discussions with Bruce Marsh and Angus Hellawell about solidification helped me to understand a little better what may have been going on inside Isle Royale's lava flows. Seth De Pasqual at IRNP provided LIDAR maps for the guide and explanations of them. Evgeniy Kulakov worked on the paleomagnetic information for us. George Robinson helped find some great mineral specimens to illustrate the zeolite facies amygdaloids, and John Jaszsak helped with photographing them. Many researchers provided material for me to learn about and communicate about Isle Royale.  There are so many crucial words and illustrations that are needed, and I tried to use as many as I could. Here are some of the names:  Ted Bornhorst, Bill Cannon, Henry Cornwall, Jim DeGraff, Doug Elmore, Fraser Goff,  John Green, Ken Hon, Wayne Jolly, Susanne Nicholson, Dick Ojakangas, Lauri Pesonen, Anthony Philpotts, Suzanne Schmidt, Steve Self, Dick Stoiber, George Walker, Walter White. Others are in the Bibliography.

Ken VanDellen and Janet Woerner helped with editing the text and clarifying the English.